Which formula/name pair is incorrect? question 2 options: mn (no3) 2 manganese (ii) nitrate mg (no3) 2 magnesium nitrate mg3n2 magnesium nitrite mn (no2) 2 manganese (ii) nitrite mg (mno4) 2 magnesium permangana?

The name of a metal complex is written by writing the name of metal followed by its oxidation state and then the name of the anion bonded

a) Mn (NO₃) ₂ : the metal is Manganese, the anion is nitrate and oxidation state of Mn is + 2

so the correct name is Manganese (II) nitrate : correct option

b) Mg (NO₃) ₂ : we can call it as Magnesium nitrate however it should be named as Magnesium (II) nitrate

c) Mg₃N₂ : the metal is Magnesium

However the anion is "nitride"

Hence the given name Magnesium nitrite is wrong

It should be : Magnesium (II) nitride

d) Mn (NO₂) ₂ : The metal is Manganese, the oxidation state is two and the anion is Nitrite

Hence correct name is Manganese (II) nitrite

e) mg (mno4) 2

The metal is Magnesium

the oxidation state is two

and thus name is

Magnesium permanganate

So completely wrong formula / name pair is Mg₃N₂:Magnesium nitrite