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14 gm of an element ‘X’ combines with 16 gm of oxygen. On basis of this which of the following is correct? (At. wt of oxygen = 6)

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The element X could have an atomic weight of 7 and its oxide formula is XO.

The element X could have an atomic weight 14 and it’s oxide formula $X_{2} O_{3}$

The element X could have an atomic weight 7 and it’s oxide formula $X_{2} O$

The element X could have an atomic weight 14 and it’s oxide formula ${XO}_{2}$

answer is C.

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Detailed Solution

If we consider atomic mass of X is 7.
Then 14 grams of X contain two gram atoms of X
Its formula with oxygen is $X_{2} O$

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