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Valency and Oxidation State

Fill up the t...

Question

Fill up the table from the given choice.
Element Oxidation number
Oxygen -2 in most compounds ____(i) in $H_{2} O_{2}$ and _____(ii) in $O F_{2}$
Halogen -1 for___(iii) in all its compounds
Hydrogen _(iv) in most of its compounds (v)in binary metallic hydrides
Sulphur __(vi) in all sulphides

(i) + 1 (i i) + 1 (i i i) C l (i v) + 1 (v) - 1 (v i) + 2

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(i) - 1 (i i) + 2 (i i i) F (i v) + 1 (v) - 1 (v i) - 2

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(i) - 1 (i i) + 1 (i i i) F (i v) + 1 (v) + 2 (v i) + 2

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(i) + 1 (i i) + 2 (i i i) C l (i v) + 1 (v) + 1 (v i) + 6

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Solution

The correct option is C $(i) - 1 (i i) + 2 (i i i) F (i v) + 1 (v) - 1 (v i) - 2$
Oxygen: -2 in most compounds ( $2 \times 1 + 2 x = 0 \Rightarrow x = - 1) - 1 - - -$ (i) in $H_{2} O_{2}$ and ( $x - 2 \Rightarrow x = + 2) + 2 - - -$ (ii) in $O F_{2}$
Halogen: -1 for $F l u o r i n e (F) - ------------ -$ (iii) in all its compounds
Hydrogen: $+ 1 - - -$ (iv) in most of its compounds $- 1 - - -$ (v) in binary metallic hydrides
Sulphur: $- 2 - - -$ (vi) in all sulphides.

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Similar questions

Express each of the following as a rational number in the form $\frac{p}{q} :$

$(i) 6^{- 1} (i i) (- 7)^{- 1} (i i i) {(\frac{1}{4})}^{- 1} (i v) (- 4)^{- 1} \times {(\frac{- 3}{2})}^{- 1} (v) {(\frac{3}{5})}^{- 1} \times {(\frac{5}{2})}^{- 1}$

Now in each of the pairs of polynomials given below, check whether the first is a factor of the second:

(i) x + 1, x³ − 1

(ii) x − 1, x³ + 1

(iii) x + 1, x³ + 1

(iv) x² − 1, x⁴ − 1

(v) x − 1, x⁴ − 1

(vi) x + 1, x⁴ − 1

(vii) x − 2, x² − 5x + 1

(viii) x + 2, x² + 5x + 6

(ix)

(x) 1.3x − 2.6, x² − 5x + 6

Now can you write the meaning of the expressions below in ordinary language?

(i)

(ii)

(iii)

(iv)

(v) x + y + 2

(vi)

(vii) ab + 1

(viii) (a + 1) (b + 1)

Q. Express each of the following as a rational number in the form

\frac{p}{q} :

(i) 6⁻¹
(ii) (−7)⁻¹
(iii)

{(\frac{1}{4})}^{- 1}

(iv)

(- 4)^{- 1} \times {(\frac{- 3}{2})}^{- 1}

(v)

{(\frac{3}{5})}^{- 1} \times {(\frac{5}{2})}^{- 1}

Check whether each of the polynomials listed below is a factor of 3x³ − 2x² − 3x + 2; if not, find the remainder.

(i) x − 1

(ii) 3x − 2

(iii) 2x − 3

(iv) x + 1

(v) 3x + 2

(vi) 2x + 3

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Element	Oxidation number
Oxygen	-2 in most compounds ____(i) in $H_{2} O_{2}$ and _____(ii) in $O F_{2}$
Halogen	-1 for_____(iii) in all its compounds
Hydrogen	_____(iv) in most of its compounds ______(v)in binary metallic hydrides
Sulphur	______(vi) in all sulphides

Fill up the table from the given choice.ElementOxidation numberOxygen-2 in most compounds ____(i) in H2O2 and _____(ii) in OF2Halogen-1 for_____(iii) in all its compoundsHydrogen_____(iv) in most of its compounds ______(v)in binary metallic hydridesSulphur______(vi) in all sulphides

Fill up the table from the given choice.
Element Oxidation number
Oxygen -2 in most compounds ____(i) in $H_{2} O_{2}$ and _____(ii) in $O F_{2}$
Halogen -1 for___(iii) in all its compounds
Hydrogen _(iv) in most of its compounds (v)in binary metallic hydrides
Sulphur __(vi) in all sulphides