Question

Assertion : For hydrogen like species, energy of an electron in a particular orbit increases with increase in value of Z.

Reason : Electronegativity decreases across a period.

(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 correct explanation of A  

(c) A is true but R is false  

(d) A and R are false

Answer 1

Correct option  (c) A is true but R is false  

Explanation:

For hydrogen like species, energy of an electron in nth orbit is given by

Electronegativity increases across a period with decrease in size of atoms.