A) 40 protons and 20 electrons
B) 20 protons and 40 electrons
C) 20 protons and 20 neutrons
D) 20 protons and 40 neutrons
Correct Answer: C
Solution :
\[P=\,\]20, mass no. A = 40 \[N=\,\]A?P = \[40-20=20\] \[P=N=20.\]You need to login to perform this action.
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