Question

ELEMENT X,Y AND Z HAVE ATOMIC NUMBER 6,9 AND 12.WHICH WILL FORM AN ANION AND WHICH ONE WILL FOEM A CATION

Answer 1

6-carbon
9-Fluorine
12-Magnesium
Mg is cation
fluoride is an anion
carbon has 4 valence electrons.
when C reacts with anion it is cation and when with cation it is anion.
Normally we can say C is anion

Answer 2

element x-6-carbon
element-y-9-florine
element-z-12-magnessium
so therefore florine will form anion(-) and magnessium and carbon will form an cation（+）