Question

An atom with atomic number 20 is most likely to comically with the atom whose

atomic number is​

Answer 1

Required Answer:

☑ 16.

☑ 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.