The nucleus of an atom of k-42 contains
(1) 19 protons and 23 neutrons
(2) 19 protons an...
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Chemistry, 21.08.2019 16:00 joannachavez12345
The nucleus of an atom of k-42 contains
(1) 19 protons and 23 neutrons
(2) 19 protons and 42 neutrons
(3) 20 protons and 19 neutrons
(4) 23 protons and 19 neutrons
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