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Among the following, the energy of 2s orbital is lowest in:

a)

Li

b)

Li

c)

H

d)

Na



Question ID - 56460 | SaraNextGen Top Answer

Among the following, the energy of 2s orbital is lowest in:

a)

Li

b)

Li

c)

H

d)

Na

1 Answer
127 votes
Answer Key / Explanation : (b) -

As the value of Z (atomic number) increases, energy of orbitals decreases (becomes more –ve value)    order of energy of 2s orbital is

H > Li > Na > K

127 votes


127