Question

Which of the following is true about the compound MgBr2?

Question 2 options:


A magnesium atom gained 2 electrons, while two bromine atoms each lost 1 electron.


A magnesium atom lost 2 electrons, while a bromine atom gained 2 electrons.


A bromine atom lost 2 electrons, while a magnesium atom gained 2 electrons.


A magnesium atom lost 2 electrons, while two bromine atoms each gained 1 electron.

Answer 1

We have to get true statement about the compound MgBr₂.

The true statement is: a magnesium atom lost 2 electrons, while two bromine atoms each gained 1 electron.

Magnesium is electropositive element while bromine in electronegative element. Magnesium releases electron and bromine accepts electron.

Magnesium can release two electrons and gets outermost shell fulfilled whereas each bromine accepts one electron to get outermost shell fulfilled. So, two bromine atoms combine with one magnesium atom.

Magnesium can not accept electron and bromine can not release electron.