Which symbol correctly represents an element (D) whose atoms contain 15 protons and 20 neutrons?
A. 20/15 D
B. 15/20 D
C. 35/15 D
D. 15/35 D
1
Expert's answer
2016-06-14T08:31:03-0400
Answer: C) 35/15 D A numeric in the upper left corner of the chemical symbol stated for the atomic mass. The atomic mass is almost equal to a sum of protons and neutrons because electrons are not weighted much. The atomic numeric is situated below on the left and stated for a number of protons.
Numbers and figures are an essential part of our world, necessary for almost everything we do every day. As important…
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