the number of electrons in 4019 k -1 is1
The number of electrons in [4019 k ]-1 is:
(1) 19
(2) 20
(3)18
(4)40
Ans: 40
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the number of electrons in 4019 k -1 is1 19 2 20 318 440ans
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the number of electrons and neutrons of an element is 18 and 20 respectively its mass number is1 17 2
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