Assertion: The average mass of one Mg atom is `24.305 amu`, which is not actual mass of one Mg atom.
Reason: Three isotopes, `24 Mg, 25 Mg and 26 Mg`, of Mg are found in nature.
A. (a)If both assertion and reason are true and the reason is the correct explanation of the assertion.
B. (b)If both assertion and reason are true and the reason is not the correct explanation of the assertion.
C. (c )If assertion is true but reason is false.
D. (d)If assertion is false but reason is true.
Reason: Three isotopes, `24 Mg, 25 Mg and 26 Mg`, of Mg are found in nature.
A. (a)If both assertion and reason are true and the reason is the correct explanation of the assertion.
B. (b)If both assertion and reason are true and the reason is not the correct explanation of the assertion.
C. (c )If assertion is true but reason is false.
D. (d)If assertion is false but reason is true.
Correct Answer – A