Chemistry
An element X has 2 electrons in its M shell, it forms bond with an element Y which has 7 electrons in its third orbit.
(a) Write the formula of the compound formed.
(b) Which nearest inert gas electronic configuration will element X and Y acquire?
(c) Show using an orbital diagram the formation of compound between X and Y.
Atomic Structure
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Answer
(a) XY2
Reason — As element X has 2 electrons in its M shell, so the electronic configuration of X is [2, 8, 2] and Y has 7 electrons in the third shell so its electronic configuration is [2, 8, 7]
X donates it two valence electrons and completes its octet and two atom of Y accepts the electrons to attain the octet, hence the compound formed is XY2.
(b) The nearest inert gas electronic configuration for element X is 2, 8 i.e., Neon while that for element Y is 2, 8, 8 i.e, Argon.
(c) Orbital diagram of XY2
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