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Question

In ₈₈Ra²²⁶ nucleus there are

Options

A.226protons and 88 electrons

B.138 protons and 88 neutrone

C.226 neutrone and 88 electrons

D.138 neutrone and 88 protons

Solution

₈₈Ra²²⁶ ; No. of protons = 88
No. of neutrons = 226 - 88 = 138

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