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Standard IX

Chemistry

Lewis Dot Structure

Assertion :Th...

Question

Assertion :These questions consists of two statements each, printed as assertion and reason, while answering these questions you are required to choose any one of the following responses.
$H g$ is the only metal which is liquid at $0^{o} C$ . Reason: It has very high I.P and weak metallic bond.

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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Solution

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
The ionization energy of mercury is very high and the metallic bonds are very weak.
Hence, mercury is the only metal which is liquid at $0^{0} C$ .
Thus, both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Similar questions

Statement-1 : In (cyclobutadiene) all C-C bond lengths are equal.

Statement-2 : Cyclobutadiene is aromatic and the

Π

orbitals are orthogonal to each other.

The Assertion and Reason are given, you are required to choose any one of the following four responses.

A) Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

B) Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

C) The Assertion is correct but Reason is incorrect

D) Both Assertion and Reason are incorrect

In the following questions a statement of Assertion (A) followed by a statement of Reason (R) is given. Choose the correct answer out of the following choices.

(a) Assertion and Reason both are correct statements an Reason is correct explanation for Assertion.

(b) Assertion and Reason both are correct satements but Reason is not correct explanation for Assertion.

(d) Assertion is wrong statement but Reason is correct statement.

Assertion (A) The packing efficiency is maximum for the fcc structure.

Reason (R) The coordination number is 12 in fcc structures.

In the following questions a statement of Assertion (A) followed by a statement of Reason (R) is given. Choose the correct answer out of the following choices.

(a) Assertion and Reason both are correct statements and Reason is correct explanation for Assertion.

(b) Assertion and Reason both are correct satements but Reason is not correct explanation for Assertion.

(d) Assertion is wrong statement but Reason is correct statement.

Assertion (A) The total number of atoms present in a simple cubic unit cell is one.

Reason (R) Simple cubic unit cell has atoms at its corners, each of which is shared between eight adjacent cells.

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.

Q. Choose the correct option for the given assertion and reason.
Assertion: Two plane mirrors kept at right angle deviate any ray of light by

180^{\circ}

after two successive reflections.
Reason: The above condition is satisfied only for angle of incidence,

i = 45^{\circ}

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Assertion :These questions consists of two statements each, printed as assertion and reason, while answering these questions you are required to choose any one of the following responses.Hg is the only metal which is liquid at 0oC. Reason: It has very high I.P and weak metallic bond.

Assertion :These questions consists of two statements each, printed as assertion and reason, while answering these questions you are required to choose any one of the following responses.
$H g$ is the only metal which is liquid at $0^{o} C$ . Reason: It has very high I.P and weak metallic bond.