Question

Assertion : Positive ions will be wider than parent atoms

Reason : Nuclear charge pulls them closer

2. Assertion : Dinegative anion of oxygen is quite common but dinegative anion of sulphur is less common

Reason : Covalency of oxygen is two

3. Assertion : The atomic radii of calcium is smaller than sodium.

Reason : Calcium has a lower nuclear charge than sodium

4. Assertion : Outermost electronic configuration of most electropositive elements is ns2 np3.

Reason : ns2 np3 is stable due to half filled subshell.

5. Assertion : Ground state configuration of Cr is 3d5, 4s1.

Reason : A set of half filled orbitals containing one electron each with their spin parallel provides extra stability to the system.​

Answer 1

Answer:

1. bOTH A AND R

2. A TRUE ,R FALSE

3. BOTH A AND R BUT NOT CORRECT EXPLANATION

4. a false r true

5. A true R false

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