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22-02-2016
Chemistry

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Which of these statements is incorrect regarding an atom of the element scandium?
A. Its chemical symbol is Sc.
B. It has 21 positively charged protons in its nucleus.
C. It has 21 negatively charged electrons.
D. It has 21 neutrons in its nucleus.

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TheLordSteven TheLordSteven

22-02-2016

D. is incorrect
Scandium naturally occurs as Scandium-45, and has 21 protons. meaning it has 24 neutrons in its nucleus(45-21).

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