Question

An atom A having 20% more neutron then proton, having 3 electron in their valence shell identify the atom A​

Answer 1

Answer:

Atomic number 20 will be distributed in electron shell as 2,8,8,2.

Its valency is 2. It will loose this 2 electron to gain stability and noble gas configuration. If atomic number 11 is distributed in electron shell it will be 2,8,1.

Atom with valence electron 1 will loose this atom to gain stability. Hence, both

20

X &

11

X will gain nothing i.e. will not gain stable electronic configuration after combining with each other.

An atom with atomic number 16 has electronic configuration as 2,8,6.It will gain 2 electron from

20

X and complete its octet. Thus atom having atomic number 20 will combine most likely with atom having atomic number 16 as both will gain stable electronic configuration.