Approximate atomic weight is of an element is $26.89 g$ . If its equivalent weight is $8.9 g$ , the exact atomic weight of element would be:
$29.89$
$8.9$
$17.8$
$26.7$

Question

Approximate atomic weight is of an element is 26-89 - g- If its equivalent weight is 8-9 - g- the exact atomic weight of element would be-29-898-917-826-7

Toppr Admin · Accepted Answer

Atomic weight - Equivalent weight -xD7- Valency-x21D2- Valency -approx- at- wt-Eq- wt-Eq- wt- -8-9g-Given-x2234- Valency -26-898-9-3-x21D2- At- wt- -8-9-xD7-3-26-7gSo- the correct option is D

Approximate atomic weight is of an element is 26.89g. If its equivalent weight is 8.9g, the exact atomic weight of element would be:29.898.917.826.7

Atomic weight = Equivalent weight × Valency⇒ Valency =approx. at. wt.Eq. wt.Eq. wt. =8.9g(Given)∴ Valency =26.898.9=3⇒ At. wt. =8.9×3=26.7gSo, the correct option is D

Approximate atomic weight is of an element is $26.89 g$ . If its equivalent weight is $8.9 g$ , the exact atomic weight of element would be:
$29.89$
$8.9$
$17.8$
$26.7$

Atomic weight = Equivalent weight $\times$ Valency

$\Rightarrow$ Valency $= \frac{approx. at. wt.}{Eq. wt.}$

Eq. wt. $= 8.9 g (Given)$

$∴$ Valency $= \frac{26.89}{8.9} = 3$

$\Rightarrow$ At. wt. $= 8.9 \times 3 = 26.7 g$

So, the correct option is $D$