Question

Assertion : The nucleus of gold is stable even though there is a very strong coulombic repulsion among the protons.
Reason : The inverse square coulomb force is exactly balanced by another inverse square force which is very powerful, i.e., nuclear force.

• A. Both Assertion and Reason are true and Reason is the correct explanation of Assertion
• B. Both Assertion and Reason are true but Reason is not the correct explanation of Assertion
• C. Assertion is true but Reason is false
• D. Assertion is false but Reason is true
• E. Both Assertion and Reason are false

Answer 1

Answer: (C)

Assertion is true but Reason is false

The nucleus of gold is stable even though there is a very strong coulombic repulsion among the protons.
The inverse square coulomb force is exactly balanced by very powerful, the nuclear force which do not obey the inverse square law.
The nuclear forces involve stronger proton neutron, neutron-neutron and even proton-proton attractive forces which are nearly ${10}^{21}$ times stronger than electrostatic forces.
The Assertion is true but Reason is false.