Chemistry · Structure of atom

Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): For hydrogen-like species, the energy of an electron becomes more negative with an increase in atomic number Z. Reason (R): Higher atomic number means a stronger positive charge on the nucleus, binding the electron more tightly. In the light of the above statements, choose the correct answer from the options given below:

1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true but (R) is NOT the correct explanation of (A).
3. (A) is true but (R) is false.
4. (A) is false but (R) is true.