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The electron configuration of He(Z=2, A=4) is
Row 4 and column 2
K2L8M5
Number of electrons in the outer energy level
All of the choices.
Number of occupied energy levels
3
3
K2
Period is the:
Row 4 and column 2
K2L8M5
Number of electrons in the outer energy level
All of the choices.
Number of occupied energy levels
3
3
K2
The calcium atom,,Ca(Z=20, A=40) belongs to
Row 4 and column 2
K2L8M5
Number of electrons in the outer energy level
All of the choices.
Number of occupied energy levels
3
3
K2
The argon atom,,Ar(Z=18, A=40) has ……………. shells:
Row 4 and column 2
K2L8M5
Number of electrons in the outer energy level
All of the choices.
Number of occupied energy levels
3
3
K2
The electron configuration of sulfur is: K2L8M6. Its period is
Row 4 and column 2
K2L8M5
Number of electrons in the outer energy level
All of the choices.
Number of occupied energy levels
3
3
K2
Group is related to
Row 4 and column 2
K2L8M5
Number of electrons in the outer energy level
All of the choices.
Number of occupied energy levels
3
3
K2
Isotopes have:
Row 4 and column 2
K2L8M5
Number of electrons in the outer energy level
All of the choices.
Number of occupied energy levels
3
3
K2
The electron configuration of phosphorous (row 3 and column 15) is
Row 4 and column 2
K2L8M5
Number of electrons in the outer energy level
All of the choices.
Number of occupied energy levels
3
3
K2
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