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Magnesium and iron are metallic elements. How does a mole of magnesium compare with a mole of iron?

AA mole of iron has more atoms.
BThey both have the same mass.
CA mole of magnesium has more mass.
DThey both have the same number of atoms.

Verified Answer :

Given a mole each for iron and magnesium, the number of atoms of each element is equal. Iron has a greater mass due to its greater molecular weight. The correct statement among the choices is D.

Answer: d) They both have the same number of atoms.

Explanation:

A mole is defined as the amount of substance that contains Avogardro number of the substance. Avogadro's number is given by \(6.022\times 10^{23}\).

\(1mole=6.022\times 10^{23}particles\)

According to avogadro's law, 1 mole of every substance weighs equal to its molecular mass and contains avogadro's number \(6.023\times 10^{23}\)

Thus 1 mole of magnesium and iron both contains \(6.023\times 10^{23}\) particles.

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