Chemistry - GENERAL CHEMISTRY Question with Solution | TestHub

ChemistryGENERAL CHEMISTRYElectronic ConfigurationMedium2 minQB

ChemistryMediuminteger

Write minimum atomic number of that atom which have total number of electrons in s-subshells are same as total number of 3d electrons.

Answer:

Solution:

Electronic configuration: $1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6} 4 s^{2} 3 d^{5}$ . Total s-electrons = 8, 3d-electrons = 5.

For s-electrons = 3d-electrons, we need 8 3d-electrons.

Configuration: $1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6} 4 s^{2} 3 d^{8}$ . Atomic number = 28.

Sum of digits: $2 + 8 = 10 \to 1 + 0 = 1$ .

Stream:JEESubject:ChemistryTopic:GENERAL CHEMISTRYSubtopic:Electronic Configuration

⏱ 2mℹ️ Source: QB

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