Why does fluorine not produce oxyacids?

1. It is most electronegative

2. It is the most powerful oxidising agent

3. It has vacant d- orbitals

4. None of the above

Which of the following does not form stable pentoxide

1. As

2. Sb

3. Bi

4. P

F₂ reacts with dilute NaOH to give oxygen difluroide. The formula is

(1) F₂O

(2) OF₂

(3) F₂O₂

(4) F₂O₃

Which of the following oxyacids of chlorine is least tendency to get oxidise?

(1) HOCl

(2) HClO₂

(3) HClO₃

(4) HClO₄

Which of the following is most basic

(1) F^-

(2) Cl^-

(3) Br^-

(4) $I^{\mathit{-}}$

Of the hydrides, $H_{2}O, H_{2}Se, and H_{2}Te$, the one which has the smallest pK_a value is

1. H₂O

2. H₂S

3. H₂Se

4. H₂Te

The shape of $Cl{O}_3^{-}$ is

(1) Tetrahedral

(2) Triangular planer

(3) Triangular pyramid

(4) Planer

Oxygen does not form OF₆ because

1. It has a small size

2. There are no vacant d- orbitals available

3.  It has high ionization energy

4. It has a large size

The molecule having the smallest bond angle is

(1) H₂O

(2) H₂S

(3) H₂Te

(4) H₂Se

Oxide of a non-metal possesses the following characterstics.

(i) It is both a proton donor and proton acceptor

(ii) It is poor conductor of electricity

(iii) It reacts readily with basic and acidic oxides

(iv) It oxidises Fe at boiling point.

The oxide is

(1) H₂O

(2) CO₂

(3) H₂O₂

(4) NO