General Science Ek Tatv Ke Parmanu Me 19 proton Tatha 20 Neutron Hai . Iski Dravyamaan Sankhya Hogi ?

Q.11026: एक तत्व के परमाणु में 19 प्रोट्रॉन तथा 20 न्यूट्रॉन है । इसकी द्रव्यमान संख्या होगी ?

A. 39

B. 1

C. 20

D. 12

एक तत्व के परमाणु में 19 प्रोट्रॉन तथा 20 न्यूट्रॉन है । इसकी द्रव्यमान संख्या होगी ? - An atom of an element has 19 protons and 20 neutrons. What will be its mass number? - Ek Tatv Ke Parmanu Me 19 proton Tatha 20 Neutron Hai . Iski Dravyamaan Sankhya Hogi ? General Science in hindi, Physics 1 question answers in hindi pdf 20 questions in hindi, Know About 39 General Science online test General Science notes in hindi quiz book 12

Bharat sharma on 16-06-2020

ATP kya h