the nucleus of the element 21e45 contains1 45
The nucleus of the element 21E45 contains:
(1) 45 protons and 21 neutrons
(2) 21 protons and 24 neutrons
(3) 21 protons and 45 neutrons
(4) 24 protons and 21 neutrons
Ans: 21 protons and 24 neutrons
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the nucleus of the element 21e45 contains1 45 protons and 21 neutrons 2 21 protons and 24 neutrons3 21 protons and 45 neutrons 4 24
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