Question

Give one word answer for the following:

Elements having 4,5,6,7 or 8 electrons are known as.

Answer 1

• Electrons are negatively charged particles revolving around the nucleus of an atom.
• Atoms need to complete their duet or octet i.e., 2 or 8 electrons in their outermost orbit to become stable.
• The atoms which have 4,5,6,7 or 8 electrons in their outermost shell receive the electrons from another element, to get stable.
• This is the property of non-metals that they receive electrons to form anion i.e., negatively charged ion.
• In an example of Chlorine(Cl) Non-metal atom having atomic number 17.
• Its electrons are arranged in order of 2,8,7.
• Hence, it has 7 electrons in its outermost shell, and it receives 1 electron to form ${\mathrm{Cl}}^{-}$ion.

Thus, the correct answer is non-metal.