Question

1. name these ions

a) mg²+
b) s²-
c) fe³+
d) br-
e) n³-

Explanation:

• For \(Mg^{2+}\): Magnesium loses 2 electrons to form this cation. The name is magnesium ion.
• For \(S^{2 - }\): Sulfur gains 2 electrons to form this anion. The name is sulfide ion.
• For \(Fe^{3+}\): Iron loses 3 electrons. Since iron can have variable oxidation states (\(Fe^{2+}\) is ferrous, \(Fe^{3+}\) is ferric), this is ferric ion.
• For \(Br^{-}\): Bromine gains 1 electron. The name is bromide ion.
• For \(N^{3 - }\): Nitrogen gains 3 electrons. The name is nitride ion.

Answer:

a) Magnesium ion
b) Sulfide ion
c) Ferric ion
d) Bromide ion
e) Nitride ion