What is the atomic number of potassium?

Atomic Structure and Electron Configuration

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Chemistry
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9th - 10th Grade
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Hard

Lucas Foster
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
21
20
19
18
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many electrons does a neutral potassium atom have?
17
18
19
20
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is the correct electron configuration for potassium?
1s2 2s2 2p6 3s2 3p5 4s2
1s2 2s2 2p6 3s2 3p6 3d1
1s2 2s2 2p6 3s2 3p6 4p1
1s2 2s2 2p6 3s2 3p6 4s1
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the electron configuration of potassium, which shell is filled after 3p6?
4p
5s
4s
3d
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the purpose of an atomic orbital diagram?
To display the atomic mass
To indicate the element's reactivity
To represent the distribution of electrons
To show the number of protons
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In an atomic orbital diagram, what do the arrows represent?
Electrons
Photons
Neutrons
Protons
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How are electrons arranged in the p orbitals of the atomic orbital diagram?
All in one orbital
Spread out first, then paired
All paired immediately
Randomly distributed
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