Many element have non -integral atomic masses because

Options

A. They have isotopes
B. Their isoptopes have non-integral masses
C. Their isoptopes have difference masses
D. The constituents neutrons , protons, and electrons comvbine to gives fractional masses

Answer

A, C

Explanation

Most of the elements are found in nature maximum of isotopes which have difference atomic masses .Therefore, the atomic mass of any element is the average of the atomic masses of isotopes of that element
Example: ltbegt Given that the qabsandance of isotopes `^(54)Fe,^(58)Fe` and `^(17)Fe is 5% , 90 % and 5%` respectively , the atomic mass of Fe is calculate as follows:
Atomic mass of into ` = ((5 xx 54) + (90 xx 56) + (5 xx 57))/(100)`
`= 55.95`