One of the most interesting topics in chemistry is the periodic table.

The periodic table is the arrangement of all the elements ever known.

You might be thinking, how are these elements arranged?

They’re arranged according to their atomic numbers.

Here is an example.

An atomic number or proton number is the number of positive charges(protons) in the nucleus of the atom.

History of the periodic table

The periodic table was invented by Dimitri Mendeleev in 1869.

He was a Russian chemist.

The periodic table had many empty spots where elements were supposed to be in place which was later discovered, since Mendeleev’s time.

New models and versions of the periodic table have been developed to explain the behaviour of chemicals. However, they are still quite similar to Mendeleev’s original design.

The main value of the periodic table is the ability to figure out the chemical properties of an element based on its location on the table.

Latest elements found

Elements          Proposed name      Symbol

113                     Nihonium                Nh

115                     Moscovium             Mc

117                     Tennessine               Ts

118                     Oganesson              Og

The Groups in the periodic table

• Group-1: Alkali Metals

 lithium (Li), sodium (Na), potassium  (K), rubidium (Rb), caesium (Cs), francium (Fr).

• Group-2: Alkaline Earth Metals

 beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), radium (Ra).

• Group-3: Rare Earth Metals

 scandium (Sc), yttrium (Y), lanthanum (La) and actinium (Ac), lutetium (Lu) and lawrencium (Lr).

• Group-4 

titanium (Ti), zirconium (Zr), hafnium (Hf) and rutherfordium (Rf).

• Group-5 

vanadium (V), niobium (Nb), tantalum (Ta) and dubnium (Db).

• Group-6 

chromium (Cr), molybdenum (Mo), tungsten (W), and seaborgium (Sg).

• Group-7

manganese (Mn) , technetium (Tc), rhenium (Re), bohrium (Bh).

• Group-8: Transition Metals

iron (Fe), ruthenium (Ru), osmium (Os), hassium (Hs).

• Group-9 

cobalt (Co), rhodium (Rh), iridium (Ir).

• Group-10

nickel (Ni), palladium (Pd), platinum(Pt).

• Group-11

copper (Cu), silver (Ag), gold (Au).

• Group-12

zinc (Zn), cadmium (Cd), mercury (Hg).

• Group-13: Boron Group

 boron (B), aluminium (Al), gallium (Ga), indium (In), thallium (Tl), and ununtrium (Uut).

• Group-14: Carbon Group

 carbon (C), silicon (Si), germanium (Ge), tin (Sn), lead (Pb), ununquadium (Uuq).

• Group-15: Nitrogen Group

 nitrogen (N), phosphorous (P), arsenic (As), antimony (Sb), bismuth (Bi) and ununpentium (Uup).

• Group-16: Chalcogens

 oxygen (O), sulphur (S), selenium (Se), tellurium (Te),  polonium (Po), ununhexium (Uuh).

• Group-17: Halogens

 fluorine (F), chlorine (Cl), bromine (Br), iodine (I), astatine (At) ununseptium (Uus).

• Group-18: Nobel gases

helium (He), neon (Ne), argon (Ar), krypton (Kr) , xenon (Xe) , radon (Re).

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“That’s all folks

I’ll be back with more interesting blogs

Bye!”

 ~Sarayu