Question

The element that forms stable compounds in the low oxidation state ? 1:mg ,2:al ,3:ga ,4:ti

Answer 1

Answer: The correct answer is Option 1.

Explanation:

Oxidation state is defined as the number which is assigned to an element which represents the number of electrons gained or lost.

From the given options:

• Option 1: Magnesium

Magnesium is the 12th element of the periodic table and electronic configuration of this element is $[Ne]3s^2$

This element will loose 2 electrons and will attain +2 oxidation state.

• Option 2: Aluminium

Aluminium is the 13th element of the periodic table and electronic configuration of this element is $[Ne]3s^23p^1$

This element will loose 3 electrons and will attain +3 oxidation state.

• Option 3: Gallium

Gallium is the 31st element of the periodic table and electronic configuration of this element is $[Ar]4s^23d^{10}4p^1$

This element will loose 3 electrons and will attain +3 oxidation state.

• Option 4: Titanium

Titanium is the 22nd element of the periodic table and electronic configuration of this element is $[Ar]4s^23d^2$

This element will loose 4 electrons and will attain +4 oxidation state.

From the above information, magnesium is the only element which will form stable compounds in low oxidation state of +2.

Hence, the correct answer is Option 1.