Assertion Sulfur forms `SF_(6)` and also `SCI_(6)`
Reasoning Sulfur has vacant d-orbitals .

Assertion SiF_(6)^(2-) anion exists but CF_(6)^(2-) does not Reasoning Si atom vacnat d-orbital while C-atom has not .

Assertion SiF_(6)^(2-) anion exists but CF_(6)^(2-) does not Reasoning Si atom vacnat d-orbital while C-atom has not .

Assertion: PCI_(5) in aqueous medium is a better oxidant than NCl_(3) Reason: Phosphorous has vacant d-orbitals while nitrogen has not.

Assertion (R) SF_(6) is known but SCl_(6) is not. Reason (R) Due to small size of F.

Be forms [BeF_(4)]^(2-) , but Al forms [AiF_(6)]^(3-) . Reason (R ): Be does not have d -orbitals in the valence shell but Al has.

Be forms [BeF_(4)]^(2-) , but Al forms [AiF_(6)]^(3-) . Reason (R ): Be does not have d -orbitals in the valence shell but Al has.

Assertion NCI_(3) reacts with water but NF_(3) I s inert towards hydrolysis Reasoning Nitrogen des not possess vacant d-orbitals .

Assertion NCI_(3) reacts with water but NF_(3) I s inert towards hydrolysis Reasoning Nitrogen des not possess vacant d-orbitals .

Assertion(A) : SF_(6) cannot be hydroluysed but SF_(4) can be . Reason (R) : Six F atoms in SF_(6) prevent the attack of H_(2)O on sulphur atom of SF_(6) .