Assertion : Element number $12$ and element number $20$ undergo similar chemical reactions
Reason : Element number $12$ and element number $20$ have similar valence electron configuration

Both assertion and reason are correct and reason is the correct explanation for assertion

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Both assertion and reason are correct but reason is not the correct explanation for assertion

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Assertion is correct but reason is incorrect

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Assertion is incorrect but reason is correct

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Both assertion and reason are incorrect

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Solution

The correct option is C Both assertion and reason are correct and reason is the correct explanation for assertion
Both have two electrons in the valence shell. They lose these two electrons to form a di-positive cation.
Hence, both the assertion and reason are correct and reason is the correct explanation for an assertion.

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Similar questions

Assertion: Be and Al have similar properties.

Reason: $B e^{2 +}$ and $A l^{3 +}$ have nearly the same charge/volume ratios and similar polarising power.

Q. Assertion: The compressibility factor for

H_{2}

and

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(1 + \frac{P b}{R T})

Reason: The compressibility factor for

H_{2}

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can be derived from Van der Waal's equation.

Assertion (A) Rate constant determined from Arrhenius equation are fairly accurate for simple as well as complex molecules.

Reason (R) Reactant molecules undergo chemical change irrespective of their orientation during collision.

(a) Both assertion and reason are correct and the reason is correct explanation of assertion
(b) Both assertion and reason are correct, but reason does not explain assertion.
(c) Assertion is correct, but reason is incorrect
(d) Both assertion and reason are incorrect
(e) Assertion is incorrect but reason is correct.

Q. Assertion : Two electrons of helium atom are placed in only one shell but three electrons of lithium need two shells.
Reason: A shell can have maximum

{2n}^{2}

electrons.

Assertion (A) Order of the reaction can be zero or fractional.

Reason (R) We cannot determine order from balanced chemical equation.

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Assertion : Element number 12 and element number 20 undergo similar chemical reactionsReason : Element number 12 and element number 20 have similar valence electron configuration

Assertion : Element number $12$ and element number $20$ undergo similar chemical reactions
Reason : Element number $12$ and element number $20$ have similar valence electron configuration