Social Sciences, asked by naveensrichakra7496, 1 year ago

एक परमाणु के 19 प्रोटॉन और 20 न्यूट्रॉन हैं। उसकी द्रव्यमान संख्या | होगी (1) 1 (2) 19 (3) 20 (4) 39

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Answered by Anonymous

6

एक परमाणु के 19 प्रोटॉन और 20 न्यूट्रॉन हैं। उसकी द्रव्यमान संख्या | होगी (1) 1 (2) 19 (3) 20 (4) 39

option C is correct

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