How many electrons are there in a Ca atom?
A) 20
B) 40
C) 21
D) 60
Correct Answer:
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Q78: An atom represented by Q79: Isotopes are atoms of the same element Q80: An atom of chlorine-37 has Q81: Give the main shell configuration for chlorine. Q82: Which is an IMPOSSIBLE electron configuration? Q84: The number of electrons in a neutral Q85: How many electrons are there in a Q86: The model for the atom which has Q87: The line spectra of atoms provides experimental Q88: The lines in an atomic line emission
A)20 protons and
A)17
B)18
C)2,
A)1s² 2s²
B)1s²
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