Question 36
Why do helium, neon and argon have a zero valency?

Q. Why do helium, neon and argon have a zero valency?

Q. <!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> Why do Helium, Neon and Argon have a zero valency?

Q. Why does an atom of argon has zero valency ? Explain using the electronic configuration of argon.

Q.

Question 21
Carbon forms four covalent bonds by sharing its four valence electrons with four univalent atoms, e.g. hydrogen. After the formation of four bonds, carbon attains the electronic configuration of
(a) helium
(b) neon
(c) argon
(d) krypton

Q. The atoms of which of the following pair of elements are most likely to exist in free state ?
(a) hydrogen and helium
(b) argon and carbon
(c) neon and nitrogen
(d) helium and neon