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ns^(1) electron configuration is not pre...

`ns^(1)` electron configuration is not present in

A

Ag

B

Mn

C

Cr

D

Cu

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The correct Answer is:
B
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The general electronic configuration of outer most and penultimate shell is given as (n - 1)s^(2)(n-1)p^(6)(n-1)d^(x)ns^(2) . Then for an element with n=4 und x = 7.

NARAYNA-D BLOCK & TRANSITION ELEMENTS-Level-I (H.W)
  1. Which of the following set of element are transitions elements?

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  2. Give general electronic configuration of d-block elements.

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  3. ns^(1) electron configuration is not present in

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  4. Which of the following is the stable electron configuration of Fe^(+3)...

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  5. The general configuration (n-1)d^(3)ns^(2) indicates that particular e...

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  6. Which of the following ions has same number of unpaired electrons as t...

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  7. Platinum, palladium, iridium, etc., are called noble metals because

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  8. In which of the following elements, the configuration is against Auf-...

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  9. The configuration of chromium atom in ground state is

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  10. The chemical formula of siderite

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  11. The mineral of silver is

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  12. Which of the following group elements exhibits high melting and boilin...

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  13. Which group elements exhibits highest densities

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  14. Which of the following transition metals has the highest melting point...

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  15. Transition element which is volatile

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  16. The metal that has the least melting point among the following is

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  17. The melting points and the boiling points of the transitions elements ...

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  18. The second IP of Cr is high due to

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  19. Transition metals are less reactive because of their

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  20. An element M has the electron configuration [Ar]3d^(5)4s^(2). Which on...

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