An element ‘X’ has a valency 1.
Is element ‘X’ a metal or a non-metal?
So, here an element ‘X' has a valency of 1 then the element ‘X’ is a metal.
(a) always metals
(b) always non-metals
(c) always metalloids
(d) either metals or non-metals
An element A has 2 electrons in its fourth shell.State:
(a) its atomic number
(b) its electronic configuration
(c) its valency
(d) position in the periodic table
(e) is it a metal or non-metal
(f) is it an oxidising or reducing agent.