Question

How does covalent radii vary in a period as well as in a group in the periodic table ?what is the reason ?​

Answer 1

Answer

⚫The Reason Is ;

◾In a period as we move from left to right covalent radius decreases, in a period as we move from left to right atomic number or nuclear charge increases.

◾The full of the electron cloud by the nucleus increases the electron cloud shrinks and as a result the covalent radius decreases.

◾In a group covalent radius increases from top to bottom.

◾In a group as we move from top to bottom one by one orbitals are added up there by the size of the atom goes on increasing.The atomic radius also goes on increasing.

Answer 2

heya..

here is you answer.

●The covalent radii of these molecules are often referred to as atomic radii.

● This distance is measured in picometers.

● Atomic size gradually decreases from left to right across a period of elements.

●This is because, within a period or family of elements, all electrons are added to the same shell.

It may help you..☺☺