BMAT 2018 Section 2 Question 2

Elements Q and Z are shown in the Periodic Table as: What is the empirical formula and bonding type of the compound formed between these elements?

Answer:


Q has electronic configuration of 2, 8, 2
Z has electronic configuration of 2, 7

Q needs to lose 2 electrons to have full outer shell and Z needs 1 electron to have full outer shell.

Q has a valency of 2 and Z has a valency of 1. (two Z atoms are needed for each Q atom)

So the Empirical formula would be QZ2

The bonding would be ionic because Q loses two electrons and each Z atom gains one electron.

Sami Qamar

I’m Sami Qamar. I’m a YouTuber, Blogger, and first year med student.

Leave a Reply