Need help[ (1 Viewer)

[lazyandcool]

7. Metal M forms a compound with the formula of M​

2O3. Which one of the following formula is correct?
A) MCl3​

B) MSO​

4​

C) MOH​

D) M2CO3

 

[ar7]

a)

 

[Amogh]

M forms M2O3
Therefore M has a valency of 2+
Cl has a valency of 1-
so MCl3 is the only valid answer

 

[t00l]

just look at ur periodic table and youll see that it can only be (A). such a simple task zzz

 

[Oobadoo]

M forms M2O3
Therefore M has a valency of 2+
Cl has a valency of 1-
so MCl3 is the only valid answer

Don't you mean 3+ ?

O is 2-, so times 3 is 6-.
Therefore, if there are 2 Ms, M must be 3+.

And as Cl is 1-, M must be 3+.

 

[Amogh]

yea woops typo