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CBSE Class 9 Answered

Composition of the nuclei of two atomic species A and B are given as under:                         A                B Protons            17              17 Neutrons          18              20 (i) What are the mass numbers of A and B? (ii) How are they related to each other?
Asked by Topperlearning User | 20 May, 2014, 01:43: PM
answered-by-expert Expert Answer

(i) Mass number of A = 35

    Mass number of B = 37

(ii) These two species i.e. A and B are isotopes, as they have the same number of protons in their nuclei.

Answered by | 20 May, 2014, 03:43: PM
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