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Gr 8 Chemical Science: Periodic Table, Protons, Neutrons and Electrons Flashcards | StudBud
Gr 8 Chemical Science: Periodic Table, Protons, Neutrons and Electrons
1 / 10
What is the number of electrons of Calcium?
A
22
B
40
C
21
D
20
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0
0
correct · 0:00
