Question

give proper answer then I will mark brainlist​

Answer 1

Required answers :-

Q. 1. What is valency of iron in Fe2S3?

=> 3 is the valency of iron in Fe2S3.

Q. 2. The positively charged ions are called : ?

=> cations are the positively charged ions.

Q. 3. The element copper has a variable valency, these valencies are : ?

=> The element Copper has a variable valency, these valencies are: +2 and +3.

Q. 4. If the atomic number of Phosphorus is 15, the electronic configuration of phosphorus is : ?

=> If an atomic number of phosphorus is 15 then give electronic configuration of p^-3.

___________________________________

Hope it's helpful!

#BeBrainly