Question

What does the symbol ‘u’ represent? If a compound formed between element X and Y and valency of X is 3

and Y is 2, Write formula of compound.​

Answer 1

Explanation:

X is noble gas belonging to group 18 and by increasing atomic no.Y belongs to group 1 and Z belongs to group 2 so its ion has valency two after losing two electrons it becomes a divalent cation.

Answer 2

Answer:

Lib(lithium boride)

Explanation:

hope its helpful.