[14 Sep] S1: Atoms & Molecules IV

An atom of this non-metal element has a stable octet electronic configuration and 18 protons in its nucleus.

Which element could this be?

• argon

• phosphorus

• potassium

• sulfur

An atom of this non-metal element has an electronic configuration of 2.8.8.1. There are 19 protons in one atom of this element.

Which element could this be?

• lithium

• phosphorus

• potassium

• sulfur

The diagram shows an atom of this non-metal element.

Which element could this be?

• lithium

• neon

• phosphorus

• sulfur

An atom of this element has to gain 2 electrons to achieve the stable electronic configuration of a noble gas. This element can be found in Period 3 of the Periodic Table.

Which element could this be?

• calcium

• lithium

• neon

• sulfur

One atom of this noble gas has 2 electron shells.

Which element could this be?

• aluminium

• calcium

• fluorine

• neon

An atom of this element has to lose 1 electron to achieve the stable electronic configuration of a noble gas. This element can be found in Period 2 of the Periodic Table.

Which element could this be?

• calcium

• fluorine

• lithium

• neon

An ion of this element has a charge of 3+. This element can be found on Period 3 of the Periodic Table.

Which element could this be?

• aluminium

• argon

• magnesium

• potassium

The diagram shows the electronic structure of an ion of a non-metal element.

Which element could this be?

• aluminium

• argon

• fluorine

• magnesium