Question

An atom of an element has 5 electron in L shell. what is the atomic no of the element. state it valency and identify the element.​

Answer 1

Answer:

7,3, nitrogen

Explanation:

k,l,m,n shell so k will have 2 electron bcz that's a maximum capacity of k shell and in l shell there is 5 electrons. therefore number of electrons are 7.now it has valence electrons 5 to become 8 it will need 3 more el electrons therefore 3 is valency.

atomic no is 7 so therefore it is going to be nitrogen.

Answer 2

Answer:

the elements atomic no is 7 and it is nitrogen it's valency is 3

Explanation:

as it has 5 e- in l shell so k+l = 2+5=7 so at no is 7 ..

as it need 3 e- to get configuration it has valency of -3