Which among the following statement is correct for an element having electronic configuration 2, 8, 2?
The valency of element is 6
The element exists as a tetratomic molecule
The element is metalloid
The element forms basic oxide
Electronic configuration indicates that two electrons are present in its outermost shell.
The elements belong to s-block of periodic table. S-block elements are metallic and tend
to easily lose electrons to form ionic compounds. They are highly reactive and thus not
found in pure form.
Their oxides are basic in nature which reacts with water and give a base Magnesium
hydroxide.
Hence option 4 is correct