Course Home Ch.6 i Problem 6.67 , Problem 6.67 Part A For an He ion, do the 2s a
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Question
Course Home Ch.6 i Problem 6.67 , Problem 6.67 Part A For an He ion, do the 2s and 2p orbitals have the same energy? O Yes, 2s and 2p orbitals of He+ have the same energy O No, the 2s orbital of He has the greater energy has the greater energy. No, the 2p orbital of He cannot be determined Submit My Answers Give Up Correct Part B If we add one electron to form the He atom, would your answer to part (a) change? O Yes. In an He atom, the 2s orbital is lower in energy than the 2p orbitals. No. the 2s orbital of He has the greater energy No, the 2p orbital of He has the greater energy cannot be determined Submit My Answers Give UpExplanation / Answer
A)
He+ has one elctron
it is like H atom for which energy depends only on value of n
so, for He+ also energy depends only on value of n
hence, for He+ 2s and 2p has same energy
Answer : yes, 2s and 2p orbitals of He+ have same energy
B)
for He atom energy depend on value of n and l
so, 2s and 2p do not have same energy
also, larger the value of l will have larger the energy
for p value of l is 1
and for s value of l is 0
Answer : No, 2p orbital of He has the greater energy