NEET Physics Nuclei Questions Solved


In Ra22688 nucleus, there are 
(a) 138 protons and 88 neutrons
(b) 138 neutrons and 88 protons
(c) 226 protons and 88 electrons
(d) 226 neutrons and 138 electrons

(b) XAz=Ra22688
Number of protons = Z = 88
Number of neutrons = A-Z = 226-88 = 138.

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