Question

An atom consists of 2 elections in K shell , 8 election in L shell and 6 election in M shell. The number of valence election in the element is
a. 6 b.5 c.7​

Answer 1

$\large{\bf{\gray{\underline{\underline{\orange{Given:}}}}}}$

An atom constists of 2 electrons in K shell, 8 electrons in L shell and 6 electrons in M shell.

$\large{\bf{\gray{\underline{\underline{\green{To\:Find:}}}}}}$

We have to find number of valence electron in the element.

$\large{\bf{\gray{\underline{\underline{\pink{Solution:}}}}}}$

Electrons present in the outer orbit (shell) of an atom are called valence electrons.

⛥ Electrons present in 1st shell :

• K = 2

⛥ Electrons present in 2nd shell :

• L = 8

⛥ Electrons present in 3rd shell :

• M = 6

Here, M shell is the outer shell of the element. Therefore number of valence electron in the element is 6.