Boron is unable to form BF₆^3– ion due to-

1. Non-availability of s orbitals

2. Non-availability of d orbitals

3. Non-availability of f orbitals

4. None of the above

Assertion(A): Boric acid is considered a weak acid.
Reason(R): Boric acid is not able to release H⁺ ions on its own.

1. Both assertion and reason are true, and the reason is the correct explanation of the assertion.

2. Both assertion and reason are true, but the reason is not the correct explanation of the assertion.

3. Assertion is true but the reason is false.

4. Assertion is false but the reason is true