R R Misra Solutions for Chapter: Structure of Atom, Exercise 7: Questions on Higher Order Thinking Skills (HOTS)

The average atomic mass of a sample of an element X is 16.2 u. What are the percentages of ${}_8{}^{16}\mathrm{X}$ and ${}_8{}^{18}\mathrm{X}$ in the sample?

Select odd one out and justify your answer
${}_{17}{}^{35}\mathrm{A}, {}_{17}{}^{36}\mathrm{A}, {}_{16}{}^{35}\mathrm{A}, {}_{17}{}^{38}\mathrm{A}$
 

Select odd one out and justify your answer
H, He, Li, Be
 

Match proton, neutron, electron and hydrogen with the correct descriptions (a) to (d)
(a) It is a uncharged nucleon and was discovered by Chadwick
(b) It is distributed around the nucleus of an atom
(c) It is formed when a hydrogen atom loses its electron
(d) It does not contain any neutron in its nucleus

Write the correct forms of the following statement.
Electron was discovered by JJ Thomson in the form of anode rays.

 

Write the correct forms of the following statement.
Rutherford modified the nuclear model proposed by Bohr. 

 

Write the correct form of the following statement.
The electron is heavier than the neutron.

Write the correct forms of the following statements.
Cl-35 and Cl-37 are the two isomers of chlorine.