Question

x-[ne]3s2, Y-[Ar]4s1,z-[ar]3d3,4s2 which one are coloured compounds​

Answer 1

Answer:

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Answer 2

Out of X, Y, Z which are coloured compounds

Explanation:

• For a compound to be coloured, their has to be presence of unpaired electrons. So, compounds having unpaired electrons are having colour.
• Mostly d and f- block elements show colour. They are also known as transition and inner transition elements respectively.
• X has electronic configuration [Ne] 3s². s-orbital has 2 electrons that is it is fully filled. Therefore, X has no unpaired electrons and it is not coloured.
• Y has electronic configuration [Ar]4s¹. Valence shell orbital that is s - orbital has 1 electron. Therefore, it is show colour when burn in flame and it is highly reactive metal.
• Z has electronic configuration [Ar]3d³4s². Valence shell orbital i.e. d-orbital has 3 electrons which are unpaired. Therefore, Z is a transition metal and hence show colour.

Out of X, Y, Z: Z show colour and Y show colour on heating.