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Name the elements indicated by the follo...

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)`

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The correct Answer is:
(i)F , (ii) Ti, (iii) Mg, (iv)S
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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)

Consider the following list of electron configurations: (1) 1s^(2)2s^(2)3s^(2) (2) 1s^(2)2s^(2)2p^(6) (3) 1s^(2)2s^(2)2p^(6)3s^(1) (4) 1s^(2)2s^(2)2p^(6)3s^(2)3p^(6)4s^(2) (5) 1s^(2)2s^(2)2p^(6)3s^(2)3p^(6)4s^(2)3d^(6) Which one of the above configuration represents a transition element?

Consider the following list of electron configurations: (1) 1s^(2)2s^(2)3s^(2) (2) 1s^(2)2s^(2)2p^(6) (3) 1s^(2)2s^(2)2p^(6)3s^(1) (4) 1s^(2)2s^(2)2p^(6)3s^(2)3p^(6)4s^(2) (5) 1s^(2)2s^(2)2p^(6)3s^(2)3p^(6)4s^(2)3d^(6) Which one of the above configuration represents a neutral atom that readily forms a singly charged positive ion?

Consider the following list of electron configurations: (1) 1s^(2)2s^(2)3s^(2) (2) 1s^(2)2s^(2)2p^(6) (3) 1s^(2)2s^(2)2p^(6)3s^(1) (4) 1s^(2)2s^(2)2p^(6)3s^(2)3p^(6)4s^(2) (5) 1s^(2)2s^(2)2p^(6)3s^(2)3p^(6)4s^(2)3d^(6) Which one of the above configurations represents an excited state of a neutral atom?

Elements A,B,C,D and E have following electronic configuration. (A) 1s^(2),2s^(1) 2p^(1), (B) 1s^(2),2s^(2) 2p^(6) , 3s^(2) 3p^(1) (C) 1s^(2),2s^(2)2p^(6),3s^(2) 3p^(3) (D) 1s^(2),2s^(2)2p^(6),3s^(2) 3p^(5) (E) 1s^(2),2s^(2) 2p^(6) , 3s^(2) 3p^(6) Which among the belongs to same group in the periodic table. ?

Elements A, B, C, D and E have the following electronic configurations: A: 1s^(2) 2s^(2) 2p^(1) B: 1s^(2) 2s^(2) 2p^(6) 3s^(2) 3p^(1) C: 1s^(2) 2s^(2) 2p^(6) 3s^(2) 3p^(2) D: 1s^(2) 2s^(2) 2p^(6) 3s^(2) 3p^(5) E: 1s^(2) 2s^(2) 2p^(6) 3s^(2) 3p^(6) 4s^(2) Which among these will belong to the same group in the periodic table?

The electronic configurations of some elements are given below: (i) 1s ^(2) 2s ^(2) 2p ^(6) 3s ^(1) (ii) 1s ^(2) 2s ^(2) 2p ^(6) 3s ^(2) 3p ^(6) 4s ^(2) 3s ^(1) (iii) 1s ^(2) 2s ^(2) 2p ^(3) (iv) 1s ^(2) 2s ^(2) 2p ^(6) 3s ^(2) 3p ^(6) 4s ^(2) (v) 1s ^(2) 2s ^(2) 2p ^(6) 3s^(2) 3p ^(5) (vi ) 1s ^(2) 2s ^(2) 2p^(6) 3s ^(2) 3p ^(3) (vii) 1s^(2) 2s ^(2) 2p^(6) (viii) 1s ^(2) 2s ^(2) 2p ^(6) 3s ^(2) 3p ^(4) Name the elements. Out of these which 1. is an alkaline earth metal 2. has lowest chemical reactivity 3. belong to group 15 of the periodic table 4. is a transition element 5. is halogen 6. belong to p-block 7. belong to second period.

DINESH PUBLICATION-STRUCTURE OF ATOM-Problems for practice
  1. State whether the following sets of quantum numbers can be allowed or...

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  2. What is the maximum number of orbitals in any energy level ?

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  3. Describe the orbital with n = 4 and l=0

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  4. Write the values of all the quantum numbers of the electron with 2s^(2...

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  5. Can we designate an orbital as 2d ?

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  6. An atomic orbital has n=3, what are the possible values of l ?

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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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  15. Which of the following represent ground state configurations and whic...

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  16. Write the values of all the four quantum numbers for the last electron...

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  17. Name the elements indicated by the following configurations : (i) 1s...

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  18. A p-sub-shell which consists of px, py and pz orbitals contains only o...

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  19. Write the electronic configuration of CI^(-) ion. To which configurati...

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  20. Write the electronic configuration of the elements (i) .(9)^(19)F ,...

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