How many gram atoms are present in 144 g of magnesium?

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100

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144

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Solution

The correct option is B 6
Atomic weight of Magnesium=24 $g m o l^{- 1}$
$N u m b e r o f g r a m a t o m s = N u m b e r o f m o l e s = \frac{W e i g h t i n g r a m s}{A t o m i c W e i g h t} = \frac{144}{24} = 6$

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