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Stability of Fully Filled and Half Filled Orbitals

The octet rul...

Question

The octet rule says that atoms like to have full outer shells of only ___________.

A

eight electrons

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B

nine electrons

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C

six electrons

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D

seven electrons

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Solution

The correct option is A eight electrons
According to octet rule, atoms try to complete their octet by having 8 electrons in their outermost shell

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Octet rule states that elements tend to combine in such a way that each atom has eight electrons in its valence shell. Why only 8 electrons?

Q. The tendency of atoms to have eight electrons in the outer shell is known as the “octet rule” or “Rule of eight”.

Q. Octet rule states that elements tend to combine by losing, gaining or sharing electrons such that each atom has eight electrons in its valence shell. Why only 8 electrons?

Q. Assertion :Octet rule is obeyed in the formation of sodium chloride. Reason: According to octet rule, the sodium atom which has only single electron in outermost shell , looses the electron to get a stable configuration like Ne gas, while the chlorine gas with 7 valence electrons gains an electron from the Na atom to obtain an stable configuration like Ar gas.

Q. Assertion :In the formation of a molecule, only the outer shell electrons take part in chemical combination and they are known as valence electrons. Reason: Atoms achieve the stable octet when they are linked by chemical bonds.

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