04. Valency refers the number of electrons which :
a Find in valence shell
b. Need to satisfy the law of octate
c. Need to satisfy the 2n² rule
d. Both a and b
Answers
Answer:
d. (both a and b)
We all know that the chemical formula for water is H2O. How many times have we wondered why it is written as “H2O” and not something else? What is the reason for this particular formula? The answer to the above question is “Valency”. Let us know more about Valency and how it helps in determining a formula!
Explanation:
The octet rule refers to the tendency of atoms to prefer to have eight electrons in the va(lence shell. When atoms have fewer than eight electrons, they tend to react and form more stable compounds. When discussing the octet rule, we do not consider d or f electrons. Only the s and p electrons are involved in the octet rule, making it useful for the main group elements (elements not in the transition metal or inner-transition metal blocks); an octet in these atoms corresponds to an electron configurations ending with s2p6 .