How many electrons are there in the valence shell of the "O^(2-)" ion? (a) 2 (b) 4 (c) 10 (d) 8

How many electrons are present in the valence shell of P in PCl_3 ?

An element has 8 electrons in the valence shell

Answer the following : (a) How many types of fission are possible of a covalent bond? (b) how many types of ions are formed by heterolytic fission and what are their names? (c) What are the names and nature of the parts formed by homolytic fission? (d) How many electrons are present in the valence shell of the carbon atom of the carbonium ion? (e) How many electrons are present in the valence shell of carbon atom of the carbanion ion? (f) Name the attacking reagents and give their nature. (g) Write the names of the parts obtained when C-Cl bond of ethyl chloride undergoes heterolytic fission. (h) What is the major factor that influences the relatives stabilities of carbocations, carbanions and free radicals.

How many electron states are there in the following shells: (a) n=4 , (b) n=1 , (c ) n=3 , (d) n=2 ?

How many electron pairs are present in valence shell of oxygen in wter molecule ?

How many electrons pairs are present in valence shell of oxygen in water molecule

The number of valence electrons in the O^(2-) ion is