SSC MTS EXAM

SSC

CHEMISTRY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What is the octet rule? How many valence electrons can the first three periods hold?
A
8
B
2
C
2 8 8
D
2 8 16
Explanation: 

Detailed explanation-1: -The octet rule refers to the tendency of atoms to prefer to have eight electrons in the valence shell. When atoms have fewer than eight electrons, they tend to react and form more stable compounds.

Detailed explanation-2: -What is the Octet Rule? The octet rule dictates that atoms are most stable when their valence shells are filled with eight electrons.

Detailed explanation-3: -…are expressed by his celebrated octet rule, which states that electron transfer or electron sharing proceeds until an atom has acquired an octet of electrons (i.e., the eight electrons characteristic of the valence shell of a noble gas atom). When complete transfer occurs, the bonding is ionic.

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