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Explain the meaning of the symbol 4f^2 . Write all the four quantum numbers for these electrons.

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Explain the meaning of the symbol 4f2 . Write all the four quantum numbers for these electrons.

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4f2 : It means that the element has 2 electrons in outermost 4f shell. 

Quantum number values are, 

n = principal quantum number = 4 

l = azimuthal quantum number = 3 

m = magnetic quantum number = – 3, -2 

s = spin quantum number = + 1/2 – 1/2 .

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