Valency

A

Combining power of an atom

B

Atomicity of an element

C

Oxidation number of an element

D

Charge on an ion

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The correct Answer is:
A
By definition.
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ERRORLESS-CHEMICAL BONDING AND MOLECULAR STRUCTURE-Assertion & Reason
  1. Valency

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  2. Assertion : Water is a good solvent for ionic compounds but poor one...

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  3. Assertion : The atoms in a covalent molecule are said to share el...

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  4. Assertion : Diborane is electron deficient. Reason: There are no en...

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  5. A resonance hybrid is always more stable than any of its canonical str...

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  6. Assertion : All F - S - F angle in SF(4) are greater than 90^(@) but ...

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  7. Assertion. C-H bond in ethyne is shorter than C-H bonds in ethene. ...

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  8. Assertion: Nitrogen molecule is diamagnetic. Reason: N2 molecule hav...

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  9. Assertion : Ice is less dense than liquid water. Reason: There are v...

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  10. Assertion: Iodine is more soluble in C CI(4) than in water. Reason: ...

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  11. Assertion: o-and p-nitrophenol can be separated by steam distillation....

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  12. Assertion: Bond energy has order like C-C lt C=C lt C -= C. Reason: ...

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  13. Assertion : B(2) molecule is paramagnetic. Reason :The highest occup...

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  14. Assertion : The nearly tetrahedral arrangement of the orbitals about t...

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  15. Assertion :The S-S-S bond in S(8) molecule is 105^(@). Reason :S(8)...

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  16. Assertion(A) - Fluorine molecule has bond order one. Reason(R)-The n...

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  17. Assertion : H-S-H bond angle in H(2)S is closer to 90^(@) but H-O-H b...

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  18. Assertion : All F - S - F angle in SF(4) are greater than 90^(@) but ...

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