Assertion - Formula mass in grams of magnesium chloride has 12-044- 1023 magnesium ions- Reason - One formula mass of an ionic compound has 6-022- 1023 ions of each type-

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Mole Concept and Avogadro's Number

Assertion : F...

Question

Assertion : Formula mass (in grams) of magnesium chloride has $12.044 \times 10^{23}$ magnesium ions. Reason : One formula mass of an ionic compound has $6.022 \times 10^{23}$ ions of each type.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Assertion is incorrect but Reason is correct

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Both assertion and reason are incorrect.

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Solution

The correct option is E Both assertion and reason are incorrect.
Formula mass of magnesium chloride $(M g C l_{2})$ is 1 mole of $M g C l_{2}$ which has avogadro number of magnesium ions i.e., $6.022 \times 10^{23}$ magnesium ions. One formula mass of an ionic compound has ions equal to product number of atoms and avogadro number of each type of atoms.

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Assertion : Formula mass (in grams) of magnesium chloride has 12.044×1023 magnesium ions. Reason : One formula mass of an ionic compound has 6.022×1023 ions of each type.

Assertion : Formula mass (in grams) of magnesium chloride has $12.044 \times 10^{23}$ magnesium ions. Reason : One formula mass of an ionic compound has $6.022 \times 10^{23}$ ions of each type.