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?
The element 'M' has an atomic number 11.
(a) What is it's electronic configuration? (b) Which group does 'M' belong to? (c) Is 'M' a metal or a non-metal? (d) Write the formula of its chloride.
An element 'M' has atomic number 12.
(a) Write its electronic configuration.
(b) State the group to which 'M' belongs.
(c) Is 'M' a metal or a non-metal.
(d) Write the formula of its chloride.