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Which noble gas is used as the core in the noble gas electron configuration for plutonium (Pu)?
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10. Periodic Properties of the Elements
The Electron Configuration: Quantum Numbers
Scelta multipla
How many subshells are present in the n = 3 shell?
A
4
B
1
C
3
D
2
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Recall that the principal quantum number \(n\) defines the shell number and determines the possible subshells within that shell.
For a given shell with principal quantum number \(n\), the possible values of the azimuthal quantum number \(l\) range from \(0\) to \(n-1\).
Each value of \(l\) corresponds to a subshell: \(l=0\) is the s subshell, \(l=1\) is the p subshell, \(l=2\) is the d subshell, and so on.
For \(n=3\), the possible \(l\) values are \(0\), \(1\), and \(2\), which correspond to the 3s, 3p, and 3d subshells respectively.
Therefore, the number of subshells in the \(n=3\) shell is equal to the number of possible \(l\) values, which is \(3\).
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