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Element X Has the Atomic Symbol 1840X{}_{18}^{40}X How Many Neutrons Are There in the Nucleus?
A)

Question 9

Multiple Choice

Element X has the atomic symbol 1840X{}_{18}^{40}X . How many neutrons are there in the nucleus?


A) 18.
B) 36.
C) 22.
D) 40.

Correct Answer:

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