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WorksheetsAtomic Theory and Electron Configuration
Total questions: 16
Worksheet time: 6mins
What is the chemical symbol for an element with 35 protons, 45 neutrons, and 36 electrons?
Br
Br+10
Br-1
Kr
Which of the pairs listed below are isotopes?
Na and Na+1
F-1 and F
614C and 612C
Ar and Kr
What is the charge of an ion with 17 protons, 16 neutrons, and 18 electrons?
0
+1
-1
+9
How many neutrons are in 20280Hg+2?
80
202
122
78
What element contains 6 protons, 8 neutrons, and 6 electrons?
C
N
Mg
Si
What is the mass number of 20280Hg+2?
80
202
122
78
What is the mass number of an element with 12 protons, 12 neutrons, and 10 electrons?
2
12
22
24
The maximum number of electrons in an orbital in the p sublevel is
2
6
10
14
The element with electron configuration 1s22s22p63s2 is
carbon
sulfur
magnesium
silicon
What is the electron configuration for nitrogen?
1s22s22p3
1s22s12p1
1s22s12p2
1s22s22p23s1
Which element is represented by this electron configuration: [Xe] 6s4f145d9?
Krypton
Platinum
Palladium
Bromine
The change of an atom from an excited state to the ground state always requires
release of energy
absorption of energy
release of an electron
absorption of green light
What is the highest occupied energy level in the element mercury (Hg)?
4
5
6
p
The maximum number of electrons in a d-sublevel is
2
6
10
14
How many electrons can occupy the s-sublevels at each energy level?
two, if they have opposite spins
one
two, if they have the same spin
no more than eight
Which element is represented by this electron configuration: [Ar] 3d104s24p6
Krypton
Platinum
Palladium
Bromine
