Answer:
stu pid
Explanation:
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According to the 2n2 rule, the maximum number of electrons in the third period = 2 x (3)2 = 18. But, the last shell cannot accommodate more than 8 electrons so, the number of electrons in third period is 8. Hence, the number of elements is also 8.
a = 87
b = 83
c = 96
d = 86
germanium has 32 protons in its nucleus
