Question

Find the valencies of the underlined elements.
a) Fe↓2O↓3 b) Ca(OH)↓2
c) Ca Co↓3 d) MgSO↓4​

Answer 1

Answer:

simple answers

Explanation:

a) for Fe the valency is +3 and for O the valency is -2

b) for Ca the valency is +2 and for the OH the valency is -1

c) for Ca and $CO_{3}$ the valency is +2 and -2

d) for Mg and $SO_{4}$ the valency is +2 and -2