Question

The elements of particular period of the periodic table are given below in order from left to right with one of its element missing Li,Be,B,C,O,F,Ne (i) to which period do these elements belong? (ii) one element of this period is missing. Which is the missing element and where should it be placed? (iii) which one of these elements im the period shows the property of catenation?

Answer 1

I)these element belong to 2nd period
ii)the missing element is nitrogen N
it should be placed in 2nd period between C and O
iii)Carbon shows property of catenation

Answer 2

When the atoms increase the charge the nuclear then the electrons will automatically be affected and that revolve around the nucleus.

Nucleus present around the electrons is come closers and that can decrease the atomic radius. In this case, the radius of the atom can be decreased.

So in this experiment, you can find the decrease level of atomic radius.