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Lanthanides Electronic Configuration

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Question

write 2 similarities and 2 differences between 1S and 2S orbitals?

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Solution

Similarity: 1s and 2s orbitals are spherical in nature and can accommodate only two electrons.
Dissimilarity:
1s orbital does not contain any node while 2s orbital contains a nodal plane.
2s orbital has more energy than 1s orbital.

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Similar questions

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axis as the internuclear axis, the overlap of which of the following orbitals will not form a sigma bond and why?

1 s

2 s

1 s

2 p_{x}

2 p_{y}

2 p_{y}

1 s

2 s

Q. Group the following electronic configurations in pairs that would have different chemical properties of their atoms
(a)

{1 s}^{2}, {2 s}^{2}, {2 p}^{5}

{1 s}^{2}, {2 s}^{1}

{1 s}^{2}, {2 s}^{2}, {2 p}^{6}

{1 s}^{2}, {2 s}^{2}, {2 p}^{6}, {3 s}^{2}, {3 p}^{5}

{1 s}^{2}, {2 s}^{2}, {2 p}^{6}, {3 s}^{2}, {3 p}^{6}, {4 s}^{1}

{1 s}^{2}, {2 s}^{2}, {2 p}^{6}, {3 s}^{2} {3 p}^{6}, {4 s}^{2}, {3 d}^{10}, {4 p}^{6}

Q. I: An element that has the electron configuration

{1 s}^{2} {2 s}^{2} {2 p}^{6} {3 s}^{2} {3 p}^{6} {3 d}^{3} {4 s}^{2}

is a transition element.
II: In atoms of transition elements, the 1s, 2s, 2p, 3s and 3p orbitals are completely filled in the ground state.

Q. The electronic structure of four element a, b, c and d are
(i)

1 s^{2}

1 s^{2}, 2 s^{2}

1 s^{2}, 2 s^{2} 2 p^{5}

1 s^{2}, 2 s^{2} 2 p^{6}

The tendency to form bond is greatest in:

Q. Write the similarities and differences between frogs and toads.

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