Three isotopes of an element have mass numbers M, (M + 1) and (M + 2). If the mean mass number is (M + 0.5) than which of the following ratio may be accepted for M , (M + 1) , (M + 2) in that order.

Three isotopes of an element have mass numbers M, (M + 1) and (M + 2).

1.	Three isotopes of an element have mass numbers M, (M + 1) and (M + 2). If the mean mass number is (M + 0.5) than which of the following ratio may be accepted for M , (M + 1) , (M + 2) in that order.
A.	1 : 1 : 1
B.	4 : 1 : 1
C.	3 : 2 : 1
D.	2 : 1 : 1
Answer» C. 3 : 2 : 1

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Three isotopes of an element have mass numbers M, (M + 1) and (M + 2). If the mean mass number is (M + 0.5) than which of the following ratio may be accepted for M , (M + 1) , (M + 2) in that order.

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