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f- Block Elements

The valence s...

Question

The valence shell of the element X contains 2 electrons in a 5s sub shell. Below that shell, element X has a partially filled 4d sub shell. What type of element is X?

chalcogen

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alkali metal

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transition elements

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halogen

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Solution

The correct option is C
transition elements

Transition elements have incompletely filled d orbitals

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