Write Lewis symbols for the following atom and ions:
S and S2-; Al and Al3+; H and H-.
The Lewis symbol for the given atom and ion is as,
S = 2, 8 and 6
(Z = 16)
Why two helium atoms do not combine to form He2?
What are 'Lewis structures'?
Name the conditions for the formation of an ionic bond between two atoms.
What is crystal lattice?
What is electrovalency?
What bond is present in MgCl2 molecules?
Two elements A and B have the electronic configuration as:
A = 1s22s22p63s2 and B = 1s22s22p5
Write the empirical formula of the substance containing A and B.
What type of bonding would you expect between:
(i) a metal and a non-metal
(ii) a non-metal and another non-metal?
Mock Test Series
