
Electron Configuration and Orbital Theory

Interactive Video
•
Chemistry
•
9th - 10th Grade
•
Hard

Mia Campbell
FREE Resource
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9 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the atomic number of Krypton, and how does it relate to its electron count?
Atomic number is 10, which equals the number of electrons.
Atomic number is 36, which equals the number of electrons.
Atomic number is 54, which equals the number of electrons.
Atomic number is 18, which equals the number of electrons.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which rule can be used to determine the electron configuration by following arrows?
Periodic Rule
Orbital Rule
Electron Rule
Diagonal Rule
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the maximum number of electrons that the 's' orbital can hold?
8
2
4
6
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
After filling the 3d orbital, which orbital do we fill next for Krypton?
4s
4p
5s
3p
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many electrons can the 'd' orbital hold?
12
6
8
10
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the electron configuration notation for Krypton?
[Ar] 4s2 3d10 4p6
[Ne] 3s2 3p6 4s2
[He] 2s2 2p6 3s2
[Ar] 3d10 4s2 4p6
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which block of the periodic table is filled last in Krypton's electron configuration?
d block
p block
s block
f block
8.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the significance of the 4s orbital in relation to the 3d orbital in electron configuration?
4s is filled before 3d
3d is filled before 4s
4s and 3d are filled simultaneously
4s is never filled
9.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why might the 4s orbital sometimes be written after the 3d orbital in electron configurations?
It is a historical convention.
It reflects the order of energy levels.
It is a stylistic choice.
It is a mistake in notation.
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