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Chemistry
Chemistry
Problem
Selenium has atomic number 34. Which noble-gas electron configuration represents selenium in its ground state? a)
[
A
r
]
4
s
2
3
d
10
4
p
6
[Ar]\,4s^2\,3d^{10}\,4p^{6}
[
A
r
]
4
s
2
3
d
10
4
p
6
b)
[
A
r
]
4
s
2
4
p
4
[Ar]\,4s^2\,4p^4
[
A
r
]
4
s
2
4
p
4
c)
[
A
r
]
4
s
2
3
d
10
4
p
4
[Ar]\,4s^2\,3d^{10}\,4p^4
[
A
r
]
4
s
2
3
d
10
4
p
4
d)
[
A
r
]
4
s
2
3
d
10
4
p
2
[Ar]\,4s^2\,3d^{10}\,4p^2
[
A
r
]
4
s
2
3
d
10
4
p
2
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