Electron Configurations And Isotopes Question Preview (ID: 53740)
Electron Configurations And Isotopes.
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This is the electron configuration for what element? 1s2 2s2 2p6 3s2 3p4
a) Sulfur
b) Chlorine
c) Arsenic
d) Selenium
What comes after 7s?
a) 5d
b) 6d
c) 5f
d) 6f
How many protons does Bromine - 79 have?
a) 79
b) 44
c) 30
d) 35
How many neutrons does Barium - 138 have?
a) 56
b) 82
c) 73
d) 138
The top left number of the nuclear symbol is the
a) Atomic numbers
b) Mass number
c) Number of neutrons
d) Number of protons
How many valence electrons does Gallium have?
a) 2
b) 3
c) 4
d) 5
How many valence electrons does Cesium have?
a) 1
b) 2
c) 3
d) 4
How many valence electrons does Helium have?
a) 2
b) 4
c) 6
d) 8
How many protons does Titanium - 47 have?
a) 47
b) 25
c) 22
d) 48
The number in the bottom left of the nuclear symbol is the
a) Mass number
b) Atomic number
c) Number of neutrons
d) Charge
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