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In "".(88)Ra^(226) nucleus there are...

In `""._(88)Ra^(226)` nucleus there are

A

138 protons and 88 neutrons

B

138 neutrons and 88 protons

C

226 neutrons and 88 electons

D

226 neutons and 138 electrons

Text Solution

Verified by Experts

The correct Answer is:
b
`""_(Z)X^(A)=""_(88)Ra^(226)`
Number of protons = Z = 2
Number of neutrons = A - Z = 2
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