24, in the neutral atom.
I think you mean chromium-53. It doesn't matter - the atomic number (the number of protons in the nuceus determines how many electrons there are in the neutral atom - the mass number ( the total protons and neutrons does not affect the number of electrons)
20 electrons
42 electrons
Two electrons from each element are shared; the total is four electrons.
A phosphorus atom has 15 electrons.
6 valence electrons
8 electrons
16 electrons
20 electrons
6 electrons
97 electrons
4 electrons.
4 electrons, 2 valence electrons
Germanium has 32 electrons.
Xenon has 54 electrons.
Argon has 18 electrons.
15 total electrons, 3 valence electrons
Roentgenium has 111 electrons.