The p-Block Elements

Q. What is the common oxidation state of aluminum in its compounds?

Solution

Aluminum commonly exhibits an oxidation state of +3 in its compounds.

Correct Answer: C — +3

Q. What is the hybridization of the central atom in phosphorus pentachloride (PCl5)?

Solution

The hybridization of phosphorus in PCl5 is sp3d, indicating five bonding pairs.

Correct Answer: D — sp3d

Q. What is the maximum oxidation state of phosphorus in its compounds?

Solution

Phosphorus can exhibit a maximum oxidation state of +5 in compounds such as phosphorus pentachloride (PCl5).

Correct Answer: B — +5

Q. What is the molecular formula of the compound formed when sulfur reacts with oxygen?

Solution

Sulfur reacts with oxygen to form sulfur trioxide (SO3) under high temperature.

Correct Answer: C — SO3

Q. What is the primary oxidation state of nitrogen in ammonia (NH3)?

Solution

In ammonia (NH3), nitrogen has an oxidation state of -3.

Correct Answer: A — -3

Q. Which of the following compounds contains a double bond?

Solution

Sulfur dioxide (SO2) contains a double bond between sulfur and oxygen.

Correct Answer: B — SO2

Q. Which of the following elements is a metalloid in the p-block?

Solution

Boron is a metalloid in the p-block, while the others are metals.

Correct Answer: A — Boron

Q. Which of the following is a characteristic property of the p-block elements?

Solution

P-block elements typically form covalent bonds due to their electronegativity and atomic structure.

Correct Answer: B — Forming covalent bonds

Q. Which of the following is a property of noble gases?

Solution

Noble gases are colorless and odorless under standard conditions.

Correct Answer: B — Colorless and odorless

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