Geometric Representation of Atomic Structure of the First 20 Elements

Author:V K Sally & R Goel
9th CBSE
IMPORTANT

Geometric Representation of Atomic Structure of the First 20 Elements: Overview

This topic discusses the geometric representation of atomic structure of the first 20 elements. The table contains the number of protons, neutrons, electrons and electronic configuration of each element for better understanding.

Important Questions on Geometric Representation of Atomic Structure of the First 20 Elements

HARD
IMPORTANT

Represent the atomic structure of the following elements geometrically, clearly showing
(i) The number of protons, 
(ii) number of neutrons, 
(iii) number of electrons in various shells around the nucleus.

 (i)   H12,
(ii)   Li37
(iii)  Al1327
(iv)  Ca2040
(v)   Cl1735
 

EASY
IMPORTANT

What are shells around the nucleus? Which shell is 
(i) nearest to the nucleus and 
(ii) farthest from the nucleus?

EASY
IMPORTANT

In case of  Mg1224, the number of electron shells which are completely filled is:

EASY
IMPORTANT

Which is the correct electronic configuration of calcium atom?

EASY
IMPORTANT

Which of the following is correct electronic configuration of sodium atom?

EASY
IMPORTANT

In a neutral atom K, L and M shell are full. The total number of electrons in the atom is: