Question

18 question (3 points) predict and write the charges and symbols (e.g., ca²⁺) of the monatomic ions formed by the following atoms. 1st attempt part 1 (1 point) sulfur readily forms the following monatomic ion: s²⁻ part 2 (1 point) phosphorus readily forms the following monatomic ion: p³⁻ part 3 (1 point) the monatomic ions above are both isoelectronic with

Explanation:

Step1: Recall sulfur's position

Sulfur is in group 16. It gains 2 electrons to achieve a stable - octet.

Step2: Determine sulfur ion symbol

The symbol of sulfur ion is $S^{2 - }$.

Step3: Recall phosphorus's position

Phosphorus is in group 15. It gains 3 electrons to achieve a stable - octet.

Step4: Determine phosphorus ion symbol

The symbol of phosphorus ion is $P^{3 - }$.

Step5: Analyze isoelectronic species

$S^{2 - }$ has 18 electrons ($16 + 2$), $P^{3 - }$ has 18 electrons ($15+3$). Argon (Ar) has 18 electrons. So they are isoelectronic with Ar.

Answer:

Part 1: $S^{2 - }$
Part 2: $P^{3 - }$
Part 3: Ar