R P Rana Solutions for Chapter: Atomic Structure, Exercise 4: Exercise

Author:R P Rana

R P Rana Science Solutions for Exercise - R P Rana Solutions for Chapter: Atomic Structure, Exercise 4: Exercise

Attempt the practice questions on Chapter 4: Atomic Structure, Exercise 4: Exercise with hints and solutions to strengthen your understanding. Its All About Science - Chemistry solutions are prepared by Experienced Embibe Experts.

Questions from R P Rana Solutions for Chapter: Atomic Structure, Exercise 4: Exercise with Hints & Solutions

HARD
8th ICSE
IMPORTANT

Draw the diagrams representing the atomic structure of the following:
Sodium atom (Atomic number 11; Mass No. 23)
 

MEDIUM
8th ICSE
IMPORTANT

Draw the diagrams representing the atomic structure of the following:

Chlorine atom (Atomic number 17; Mass No. 35).

MEDIUM
8th ICSE
IMPORTANT

Draw the diagram representing the atomic structure of the following:

Carbon atom (Atomic number 6; Mass No. 12).

MEDIUM
8th ICSE
IMPORTANT

What do you understand by isotopes? Give one example.

MEDIUM
8th ICSE
IMPORTANT

It is possible to write down the electronic configuration of an atom if we know its atomic number. Why this is so?
 

HARD
8th ICSE
IMPORTANT

What would be the electronic configuration of a positively charged sodium ion? What would be its atomic number and mass number.
 

HARD
8th ICSE
IMPORTANT

Which of the two would be chemically reactive, element X of atomic number 18 or element Z of atomic number 16? Explain your answer.

HARD
8th ICSE
IMPORTANT

The electronic configuration of two elements X and Y are given below

Question Image

where p = proton, n = neutron, e = electron. When these two elements combine together to form a compound, give the mass (in grams) of one mole of this compound.