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प्रश्न
\[\ce{^197_79Au}\] contains ______.
पर्याय
79 protons and 118 neutrons
79 neutrons and 118 protons
197 protons and 118 neutrons
79 protons and 197 neutrons
MCQ
रिकाम्या जागा भरा
उत्तर
\[\ce{^197_79Au}\] contains 79 protons and 118 neutrons.
Explanation:
Number of protons = Atomic number = 79
Number of neutrons = Atomic mass number - Atomic number
= 197 - 79 = 118
shaalaa.com
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