Question

25 POINTS ~ Four Elements P, Q, R and S Have Atomic Numbers, 12, 14, 16 And 17 Respectively.

Answer the Following Question Giving Reason: 1-What Is the Position of S in the Periodic table?  2-Classify these Elements as Metals, Metalloids and Non-Metals. Which of These Elements Will Form the Most Basic Oxide?
3-How does the Valency change from P To S?
4-What is the formula and nature of the compound formed as a result of reaction of P with R?

Answer 1

Answer:

P= Magnesium (Metal)

Q= Silicon (matalloid)

R= Sulphur (Non metal)

S= Chlorine ( Non metal)

Explanation:

1- 17 group and 3 period.

3- valancy decreses

4- MgSo4