Valency part 2

In CH_4 , valency of carbon is four . Valency of carbon in acetylene is .

Valency and oxidation number of nitrogen in N_(2)O_(5)

Valency and oxidation number of nitrogen in N_(2)O_(5)

An element have atomic number 15, its valence electrons group number and valency are respectively

Maximum valency that is possible for P with Cl is _________.

Valency of a carbonate (CO_(3)) radical is

Elements with valency 1 are

Explain the terms 'valency' and 'variable valency'.

Helium atom has 2 electrons in its valence shell but its valency is not 2. Explain.

Account for the following: The valency of oxygen is generally 2, whereas sulfur shows valency of 2, 4 and 6.