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Emission and Absorption Spectra

Values of n,l...

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Values of n,l,m and s for electron 4s1 orbital will be

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Q. The orbital angular momentum for an

s

electron will be given by:

[A r] 3 d^{10} {4 s}^{1}

is electron shell configuration for:

For the electrons of oxygen atom, which of the following statements is correct ?

(a) $Z_{e f f}$ for an electron in a 2s orbital is the same as $Z_{e f f}$ for an electron in a 2p orbital

(b) An electron in the 2s orbital has the same energy as an electron in the2p orbital

(c) $Z_{e f f}$ for an electron in 1s orbital is the same as $Z_{e f f}$ for an electron in a 2s orbital

(d) The two electrons present in the 2s orbital have spin quantum number $m_{s}$ but of opposite sign

Q. Assertion :An electron in an

s

-orbital has a non-zero probability of being found right at the nucleus. Reason:

l = 0

s

-orbitals and thus there is no orbital angular momentum to fling the electron away from the nucleus.

Q. Assertion :An electron in

s

-orbital is not circulating around the nucleus but simply as distributed around it whereas an electron in

p

-orbital can be thought of as circulating around the nucleus. Reason: For

s

-orbital angular momentum is zero and for a

p

-orbital angular momentum is non-zero.

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