Question

20. Assertion (A): IEI of N is lower than 0.
Reason (R): Across a period Zeff decrease.
a) Both A and R are true and R is the correct explanation of A
b) Both A and R are true but R is not the correct explanation of A
c) A is true but R is false
d) A is false but R is true
SECTION-B)
21. Define the terms - (a) Entrony (h) Enthalny of combustion​

Answer 1

Answer:

21. a) Entropy is a state of disorder, confusion , and disorganization.

20. a)