Periodic Table? All You Need to Know About It
Jul 2021


Periodic Table? All You Need to Know About It

What is periodic table?

In chemistry, a periodic table is an ordered arrangement of all the chemical elements in ascending atomic number order that is, the total number of protons in the atomic nucleus.

When chemical elements are organized in this way, there is a recurrent pattern in their characteristics known as the "periodic law," in which elements in the same column (group) exhibit comparable properties.

Who made the first periodic table | Periodic table with real element | Electronegativity of the periodic table | Periodic table main group element | What is the trend of ionization energy |  Periods and groups in periodic table |  Dynamic periodic table of elements  |  Where are nonmetals located on the periodic table  |  What are the 118 elements

Who made periodic table?

Who made the first periodic table was Dmitri Mendeleev seminal discovery, made in the mid-nineteenth century, has proven invaluable to the advancement of chemistry.

It wasn't until the second decade of the twentieth century that it was realized that the order of elements in the periodic system is determined by their atomic numbers, the integers of which are equivalent to the positive electrical charges of the atomic nuclei represented in electronic units.

Who made periodic table

In the years afterward, tremendous strides have been achieved in understanding the periodic rule in terms of the electrical structure of atoms and molecules.
This explanation has improved the importance of the law, which is still as widely used now as it was at the turn of the twentieth century when it stated the only known link between the elements.

Where can I get a Periodic table with a real element?

Philosopher's Stone - Periodic Table With Real Elements Inside

Philosopher's Stone - Periodic Table With Real Elements I

Philosopher's stone periodic table collection of 83 individual elements were purposely cut, machined, melted, then sealed for viewing delight. With actual samples of the chemical elements embedded in the crystal clear tablet, Philosopher’s Stone is as real as it gets.
Highly radioactive elements are intentionally excluded to prioritize safety during handling or storing. However, information about these excluded elements is still displayed, such as their symbols and atomic numbers.

You can get yours by Click Here

Electronegativity on the periodic table

The capacity of an atom to attract shared electrons in a covalent connection is referred to as electronegativity. The greater the electronegativity value, the more strongly that element draws the shared electrons.
Linus Pauling established the idea of electronegativity in 1932; fluorine is assigned an electronegativity of 3.98 on the Pauling scale, and the other elements are graded according to that number.
Other electronegativity scales include the Mulliken scale, developed by Robert S. Mulliken in 1934, which averages the initial ionization energy and electron affinity, as well as the Allred-Rochow scale, which quantifies the electrostatic attraction between an atom's nucleus and its valence electrons.
Across the periodic table, electronegativity changes predictably. Electronegativity rises from bottom to top in groups and from left to right through time. As a result, fluorine is the most electronegative element, whereas francium is one of the least. (Despite having the highest electronegativity, helium, neon, and argon are not mentioned on the Pauling electronegativity scale.) The patterns in the transition metals and inner transition metals are not particularly smooth, but they are quite regular for the major group elements, as seen in the figures below.

For instance, consider this graphic from angelo

Periodic table with element groups

Elements are classified into groups:

The six noble gases—helium, neon, argon, krypton, xenon, and radon—occur after the six completed periods and form the periodic system's Group 18 (0) group. The horizontal series of items in the table are referred to as periods, while vertical series are referred to as groups. The seven elements lithium to fluorine and the seven elements sodium to chlorine are classified into seven groups: 1 (Ia), 2 (IIa), 13 (IIIa), 14 (IVa), 15 (Va), 16 (VIa), and 17 (VIIa). The 17 elements of the fourth period, ranging from potassium (19) to bromine (35) have different characteristics and are classified as Groups 1–17 (Ia–VII).
The first group, the alkali metals, so contain in addition to lithium and sodium, the metals from potassium down the table to francium but not the elements of Group 11 which are far less comparable (Ib; copper, etc.).
Also included in the second group, the alkaline-earth metals, are beryllium, magnesium, calcium, strontium, barium, and radium, but not the elements of Group 12. (IIb). Group 13 elements are included in the boron group (IIIa). The remaining four groupings are as follows: The carbon group, 14 (IVa), consists of carbon, silicon, germanium, tin, lead, and flerovium; the nitrogen group, 15 (Va), consists of nitrogen, phosphorus, arsenic, antimony, bismuth, and moscovium; the oxygen group, 16 (VIa), consists of oxygen, sulfur, selenium, tellurium, polonium, and livermorium; and the halogen group, 17 (VIIa),
Although hydrogen is a member of Group 1 (Ia), its chemical characteristics are not closely related to those of the alkali metals or halogens. It is, however, assigned the oxidation number +1 in compounds such as hydrogen fluoride, HF, and 1 in compounds such as lithium hydride, LiH; and it may thus be considered similar to a Group 1 (Ia) element and a Group 17 (VIIa) element, respectively, in compounds of these two types, taking the place of Li and then F in lithium fluoride, LiF. In reality, hydrogen is the most distinct of the elements: no other element resembles it in the same manner that sodium resembles lithium, chlorine resembles fluorine and neon-like helium.
It is a one-of-a-kind element, the only one that cannot be readily classified as a member of a group.
The transition metals are a group of elements from each long period. Scandium, 21, to zinc, 30 (the iron-group transition metals); yttrium, 39, to cadmium, 48 (the palladium-group transition metals); and hafnium, 72, to mercury, 80 (the palladium-group transition metals) (the platinum-group transition metals). Groups 3 through 12 are included in this definition of transition metals (IIIb to VIIIb, and Ib and IIb).
How Are Elements Grouped in the Periodic Table?

On the periodic table of elements, ionization, along with an atomic and ionic radius, electronegativity, electron affinity, and metallicity, follow a pattern.

  • Moving from left to right throughout an element period, ionization energy typically increases (row). This is because the atomic radius reduces as one moves over a period, resulting in a stronger effective attraction between the negatively charged electrons and the positively charged nucleus. Ionization is at its lowest for the alkali metal on the left side of the table and its highest for the noble gas on the far right. Because the noble gas has a full valence shell, it is resistant to electron removal.
  • Ionization diminishes as one moves along an element group from top to bottom (column). This is since the main quantum number of the outermost electron rises as one moves down a group. Although there are more protons in atoms going down a group (more positive charge), the result is to draw in the electron shells, making them smaller and shielding outside electrons from the nucleus's attractive force. Moving along a group, more electron shells are added, causing the outermost electron to get more far from the nucleus.

Periodic table periods and groups

The periodic table categorizes elements into groups and periods. Periods are represented by horizontal rows (across) the periodic table, whereas groups are represented by vertical columns (down) the table. As you move down a group or across a period, the atomic number increases.

Element Groups

Group elements have a common number of electrons with valence. Each element in the group of alkaline earth, for example, has two qualities. Typically, elements in a group share several common characteristics.

Another method of grouping components is based on their shared attributes (in some cases, these groupings do not correspond to the columns in the periodic table). Alkali metals, alkaline earth metals, transition metals (including rare earth elements or lanthanides as well as actinides), basic metals, metalloids or semimetals, nonmetals, halogens, and noble gases are examples of such groups. Hydrogen is classified as a nonmetal in this system. Nonmetallic elements include nonmetals, halogens, and noble gases. Metalloids have qualities that fall somewhere in the middle. The other elements are all metallic.


What are the periods of the periodic table?

Element Periods

Elements in a period share the greatest unexcited electron energy level. Because the amount of elements allowed in each energy sub-level determines the number of elements allowed in each period, some periods have more elements than others.

Natural occurring elements are divided into seven periods:

  • Period 1: H, He (does not follow the octet rule)
  • Period 2: Li, Be, B, C, N, O, F, Ne (involves s and p orbitals)
  • Period 3: Na, Mg, Al, Si, P, S, Cl, Ar (all have at least 1 stable isotope)
  • Period 4: K, Ca, Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Ga, Ge, As, Se, Br, Kr (first period with d-block elements)
  • Period 5: Rb, Sr, Y, Zr, Nb, Mo, Tc, Ru, Rh, Pd, Ag, Cd, In, Sn, Sn, Te, I, Xe (same number of elements as period 4, same general structure, and includes the first exclusively radioactive element, Tc)
  • Period 6: Cs, Ba, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Hf, Ta, W, Re, Os, Ir, Pt, Au, Hg, Tl, Pb, Bi, Po, At, Rn (first period with f-block elements)
  • Period 7: Fr, Ra, Ac, Th, Pa, U, Np, Pu, Am, Cm, Bk, Cf, Es, Fm, Md, No, Lr, Rd, Db, Sg, Bh, Hs, Mt, Ds, Rg, Cn, Uut, Fl, Uup, Lv, Uus, Uuo (all elements are radioactive; contains heaviest natural elements)

Periodic table dynamic

The periodic table organizes chemical elements by atomic number, electron configuration, and chemical characteristics.
Table rows are referred to as periods, while table columns are referred to as groups.

Where in the periodic table are the nonmetals located?

There are 18 nonmetals on the Periodic table, all of which are found in the upper right corner (Hydrogen is in the left top corner).

If Astatine is considered a nonmetal, the total number of nonmetals on the Periodic table is 18.

Non metals periodic table list

A list of all the 18 non-metals in the regular table is presented below.

Atomic number


Name of element
























































Periodic table elements list

periodic table how many elements?

118 Elements Of Periodic Table

periodic table elements name:
Hydrogen | Helium | Lithium | Beryllium | Boron | Carbon Nitrogen | Oxygen | Fluorine | Neon | Sodium | Magnesium | Aluminum | Silicon | Phosphorus | Sulfur | Chlorine | Argon | Potassium | Calcium | Scandium | Titanium | Vanadium | Chromium | Manganese | Iron | Cobalt | Nickel | Copper | Zinc | Gallium | Germanium | Arsenic | Selenium | Bromine | Krypton | Rubidium | Strontium | Yttrium | Zirconium | Niobium | Molybdenum | Technetium | Ruthenium | Rhodium | Palladium | Silver | Cadmium | Indium | Tin | Antimony | Tellurium | Iodine | Xenon | Cesium | Barium | Lanthanum | Cerium | Praseodymium | Neodymium | Promethium | Samarium | Europium | Gadolinium | Terbium | Dysprosium | Holmium | Erbium | Thulium | Ytterbium | Lutetium | Hafnium | Tantalum | Tungsten | Rhenium | Osmium | Iridium | Platinum | Gold | Mercury | Thallium | Lead | Bismuth | Polonium | Astatine | Radon | Francium | Radium | Actinium | Thorium | Protactinium | Uranium | Neptunium | Plutonium | Americium | Curium | Berkelium | Californium | Einsteinium | Fermium | Mendelevium | Nobelium | Lawrencium | Rutherfordium | Dubnium | Seaborgium | Bohrium | Hassium Meitnerium | Darmstadtium | Roentgenium | Copernicium | Nihonium | Flerovium | Moscovium | Livermorium | Tennessine | Oganesson


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    Thank you so much for this informations

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