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An electronic configuration of an atom i...

An electronic configuration of an atom is 2, 8, 7. The valency of the atom is __

A

7

B

2

C

8

D

1

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VGS PUBLICATION-BRILLIANT-CHEMICAL BONDING-EXERCISE
  1. Na, Mg, Al, N, O, F, Ne are given. Which one is more stable ?

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  2. 15P= 2, 8, 5, 16S = 2, 8, 6,17Cl = 2, 8, 7.Which of the above atoms ca...

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  3. An electronic configuration of an atom is 2, 8, 7. The valency of the ...

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  4. Which one is different among ?i) Nacl, ii)MgCl2, iii)HCl, iv)Na2O

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  5. Which of the following can form cations ?i)11 Na ii) 15 P iii)13 Al iv...

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  6. Ne' configuration among the given : i) Cl^-,ii) Mg^2+,iii)O^2-

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  7. Component ions in the compound AlCl3 are

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  8. In sodium chloride crystal the coordination number of Na^+ is

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  9. Bond energies of F-F = 159 KJ/mol.H-F = 570 KJ/mol.H-Cl = 432 KJ/mol.W...

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  10. Which of the following molecules show lone pair of electrons?

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  11. Boiling points of X, Y and Z are 1413^@C, -84.9^@C and -88.63^@c respe...

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  12. Which of the following is a polar molecule

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  13. Sodium atoms and sodium ions

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  14. Which of the following can lose two electrons to attain the configurat...

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  15. Which of the following has largest bond angle?

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  16. Which of the following is an ionic compound?

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  17. The electron covalent linkage is not in the compound

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  18. Which of the following is the most reactive ?

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  19. Which of the following compound is covalent ?

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  20. Which contain covalent and ionic compounds ?

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