Structure of Atom

Q. What is the maximum number of electrons that can occupy the third energy level?

Solution

The third energy level can hold a maximum of 18 electrons, but the first 8 are filled before moving to the next subshell.

Correct Answer: C — 18

Q. What is the oxidation state of sulfur in H₂SO₄?

Solution

In H₂SO₄, sulfur has an oxidation state of +6.

Correct Answer: D — 6

Q. What is the principal quantum number for the outermost electrons in potassium (K)?

Solution

Potassium has the electron configuration [Ar]4s¹, so the principal quantum number for the outermost electrons is 4.

Correct Answer: C — 3

Q. What is the shape of the s orbital?

Solution

The s orbital has a spherical shape.

Correct Answer: B — Spherical

Q. What type of bond is formed between sodium and chlorine in sodium chloride?

Solution

Sodium chloride is formed by ionic bonding between sodium and chlorine.

Correct Answer: B — Ionic

Q. Which element has the electron configuration [Ne]3s²3p⁵?

Solution

The electron configuration [Ne]3s²3p⁵ corresponds to Bromine.

Correct Answer: B — Bromine

Q. Which of the following is a characteristic of metals?

Solution

Metals are good conductors of heat and electricity.

Correct Answer: B — Good conductors of heat

Q. Which of the following sublevels can hold a maximum of 6 electrons?

Solution

The p sublevel can hold a maximum of 6 electrons, as it has 3 orbitals each capable of holding 2 electrons.

Correct Answer: B — p

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