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.
The electronic configuration of an element X is 2,8,6.
i. What is the number of valence electron in an atom of X?
ii. Is it a metal or a non-metal?
An element belongs to the 3rd period and Group IIIA (13) of the periodic table.State:
(a) the number of valence electrons,
(b) the valency,
(c) if it is a metal or non-metal ?
(d) the name of the element.