Question

Find the atomic mass of an element whose two isotopic forms with masses 35 and 37
units and present in 75% and 25% in nature respectively
1.) 40 2.) 35.5 3.)39 4.) 56

Answer 1

Exfoliation, separation of successive thin shells, or spalls, from massive rock such as granite or basalt; it is common in regions that have moderate rainfall. ... The thickness of individual sheet or plate may be from a few millimetres to a few metres.

Answer 2

Explanation:

option 2 is the crct answer

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