(A) : Mg^(2+) and Al^(3+) are isolectron...

(A) : `Mg^(2+)` and `Al^(3+)` are isolectronic but the magnitude of ionic radius of `Al^(3+)` is less than that in `Mg^(2+)`.
(R ) : The effective nuclear charge on the outermost electrons in `Al^(3+)` is greater than that in `Mg^(2+)`.

Both A and R are correct. R is the correct explanation of A.

Both A and R are correct, R is not the correct explanation of A.

A is true and R is false

A is false , but R true

Verified by Experts

The correct Answer is:

PERIODIC CLASSIFICATION
AAKASH SERIES|Exercise OBJECTIVE EXERCISE - 1 (IONISATION POTENTIAL)|25 Videos
PERIODIC CLASSIFICATION
AAKASH SERIES|Exercise OBJECTIVE EXERCISE - 1 (ELECTRON AFFINITY)|13 Videos
PERIODIC CLASSIFICATION
AAKASH SERIES|Exercise OBJECTIVE EXERCISE - 1 (BLOCK AND TYPES OF ELEMENTS)|40 Videos
ISOMERISM
AAKASH SERIES|Exercise ADDITIONAL PRACTICE EXERCISE ( PRACTICE SHEET (ADVANCED) INTEGER TYPE QUESTIONS)|10 Videos
PERIODIC PROPERTIES
AAKASH SERIES|Exercise LEVEL-II (TYPE -II) (PRACTICE SHEET -3 (SUBJECTIVE/ ANALYTICAL TYPE QUESTIONS ))|8 Videos

Mg^(2+) and Al^(3+) have same

Protons

Neutrons

Electronic configuration

Nucleons

Both A and R are true. R is correct explanation of A.

Both A and R are true. R is not correct explanation of A

A is true, R is false

A is false, R is true

Both A and R are correct, and R is the correct explanation of the A

Both A and R are correct, and R is not the correct explanation of the A

A is correct but R is incorrect

A is incorrect but R is correct