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Which of the following represent ground...

Which of the following represent ground state configurations and which are excited state configurations.
(i) `1s^(2), 2s^(2) 2p^(4)` , (ii) `1s^(2)2s^(2)2p^(6)3s^(1)3p^(1)` , (iii) `1s^(2) 2s^(2)2p^(6) 3s^(2)3p^(4)`.

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The correct Answer is:
(i) Ground state (ii) Excited state (iii) Ground state
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Q .Which of the following electron configurations is correct for nickel (atomic number "28" )? a) 1s^(2)2s^(2)2p^(6)3s^(2)3p^(6)4s^(1)3d^(9) (b) 1s^(2)2s^(2)2p^(6)3s^(2)3p^(6)4s^(2)3d^(8) (c) 1s^(2)2s^(2)2p^(6)3s^(2)3p^(6)4s^(0)3d^(10)

Increasing order of Electron affinity for following configuration. (a) 1s^(2),2s^(2),2p^(2) (b) 1s^(2), 2s^(2) 2p^(4) (c) 1s^(2), 2s^(2), 2p^(6),3s^(2), 3p^(4) (d) 1s^(2), 2s^(2), 2p^(6), 3s^(2), 3p^(3)

Name the elements indicated by the following configurations : (i) 1s^(2)2s^(2)2p^(5) , (ii) 1s^(2)2s^(2)2p^(6)3s^(2)3p^(6)3d^(2)4s^(2) , (iii) 1s^(2)2s^(2)2p^(6)3s^(2) , (iv) 1s^(2)2s^(2)2p^(6)3s^(2)3p^(4)

Name the element with the following electronic configurations . (a) 1s^(2)2s^(2) 2p^(6) 3s^(2) 3p^(1) (b) 1s^(2) 2s^(2) 2p^(6) 3s^(2) 3p^(6) 4s^(1) (c ) 1s^(2) 2s^(1) 2p^(6) 3s^(2) 3p^(6) 3d^( 5) 4s^(1)

The electronic configuration of 1s^(2) 2s^(2) 2p^(6) 3s^(2) 3p^(2) corresponds to

DINESH PUBLICATION-STRUCTURE OF ATOM-Problems for practice
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  4. Write the values of all the quantum numbers of the electron with 2s^(2...

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  7. Which shell would be the first to have g sub-shell ?

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  8. List all the values of l and m(1) for n=2.

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  9. List the values of l and m(1) for n=1.

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  10. If a quantum number l has value of 2, what are the permitted values of...

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  11. What are the values of n and l for 4d orbitals ?

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  12. What is the orbital angular momentum of an electron in 2s orbital ?

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  13. What is the orbital angular momentum for an electron in d orbital ?

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  14. Compute the number of subshells for M-shell.

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