NEET Test Series from KOTA - 10 Papers In MS WORD
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CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES
313243
Assertion : Outermost electronic configuration of most electronegative element is \({\text{2}}{{\text{s}}^{\text{2}}}{\text{2}}{{\text{p}}^{\text{5}}}\). Reason : \(2 \mathrm{p}^{5}\) is stable due to half filled subshell.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
The most electronegative element is Fluorine whose electronic configuration is \(1 \mathrm{~s}^{2}, 2 \mathrm{~s}^{2}, 2 \mathrm{p}^{5}\). So option (3) is correct.
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES
313244
Assertion : For hydrogen like species, energy of an electron in a particular orbit decreases with increase in value of \({\text{Z}}\). Reason : Electronegativity decreases across a period.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
For hydrogen-like species, the energy of an electron in the nth orbit is determined by the equation: \(\mathrm{E}=\dfrac{-13.6 \times \mathrm{Z}^{2}}{\mathrm{n}^{2}}\) Electronegativity increases across a period. So option (3) is correct.
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES
313245
The electronegativity of K = 0.8 and Cl = 3.0. The type of bond formed between "K" and "Cl" is
1 Pure covalent bond
2 Hydrogen bond
3 Metallic bond
4 Electrovalent bond
Explanation:
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES
313246
Which is correct in the following?
1 Radius of Cl atoms is \({\rm{0}}{\rm{.99}}\mathop {\rm{A}}\limits^{\rm{^\circ }} \), while that of \({\rm{C}}{{\rm{l}}^{\rm{ + }}}\) ion is \({\rm{1}}{\rm{.54}}\mathop {\rm{A}}\limits^{\rm{^\circ }} \)
2 Radius of Cl atoms is \({\rm{0}}{\rm{.99}}\mathop {\rm{A}}\limits^{\rm{^\circ }} \), while that of Na atom is \({\rm{1}}{\rm{.54}}\mathop {\rm{A}}\limits^{\rm{^\circ }} \)
3 Radius of Cl atoms is \({\rm{0}}{\rm{.95}}\mathop {\rm{A}}\limits^{\rm{^\circ }} \), while that of \({\rm{C}}{{\rm{l}}^{\rm{ - }}}\) ion is \({\rm{0}}{\rm{.81}}\mathop {\rm{A}}\limits^{\rm{^\circ }} \)
4 Radius of Na atoms is \({\rm{0}}{\rm{.95}}\mathop {\rm{A}}\limits^{\rm{^\circ }} \), while that of \({\rm{N}}{{\rm{a}}^{\rm{ + }}}\) ion is \({\rm{1}}{\rm{.54}}\mathop {\rm{A}}\limits^{\rm{^\circ }} \)
Explanation:
The atomic radius decreases along the period. Also cations are always smaller than their parent atoms and anions are always larger than their parent atom.
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES
313243
Assertion : Outermost electronic configuration of most electronegative element is \({\text{2}}{{\text{s}}^{\text{2}}}{\text{2}}{{\text{p}}^{\text{5}}}\). Reason : \(2 \mathrm{p}^{5}\) is stable due to half filled subshell.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
The most electronegative element is Fluorine whose electronic configuration is \(1 \mathrm{~s}^{2}, 2 \mathrm{~s}^{2}, 2 \mathrm{p}^{5}\). So option (3) is correct.
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES
313244
Assertion : For hydrogen like species, energy of an electron in a particular orbit decreases with increase in value of \({\text{Z}}\). Reason : Electronegativity decreases across a period.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
For hydrogen-like species, the energy of an electron in the nth orbit is determined by the equation: \(\mathrm{E}=\dfrac{-13.6 \times \mathrm{Z}^{2}}{\mathrm{n}^{2}}\) Electronegativity increases across a period. So option (3) is correct.
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES
313245
The electronegativity of K = 0.8 and Cl = 3.0. The type of bond formed between "K" and "Cl" is
1 Pure covalent bond
2 Hydrogen bond
3 Metallic bond
4 Electrovalent bond
Explanation:
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES
313246
Which is correct in the following?
1 Radius of Cl atoms is \({\rm{0}}{\rm{.99}}\mathop {\rm{A}}\limits^{\rm{^\circ }} \), while that of \({\rm{C}}{{\rm{l}}^{\rm{ + }}}\) ion is \({\rm{1}}{\rm{.54}}\mathop {\rm{A}}\limits^{\rm{^\circ }} \)
2 Radius of Cl atoms is \({\rm{0}}{\rm{.99}}\mathop {\rm{A}}\limits^{\rm{^\circ }} \), while that of Na atom is \({\rm{1}}{\rm{.54}}\mathop {\rm{A}}\limits^{\rm{^\circ }} \)
3 Radius of Cl atoms is \({\rm{0}}{\rm{.95}}\mathop {\rm{A}}\limits^{\rm{^\circ }} \), while that of \({\rm{C}}{{\rm{l}}^{\rm{ - }}}\) ion is \({\rm{0}}{\rm{.81}}\mathop {\rm{A}}\limits^{\rm{^\circ }} \)
4 Radius of Na atoms is \({\rm{0}}{\rm{.95}}\mathop {\rm{A}}\limits^{\rm{^\circ }} \), while that of \({\rm{N}}{{\rm{a}}^{\rm{ + }}}\) ion is \({\rm{1}}{\rm{.54}}\mathop {\rm{A}}\limits^{\rm{^\circ }} \)
Explanation:
The atomic radius decreases along the period. Also cations are always smaller than their parent atoms and anions are always larger than their parent atom.
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES
313243
Assertion : Outermost electronic configuration of most electronegative element is \({\text{2}}{{\text{s}}^{\text{2}}}{\text{2}}{{\text{p}}^{\text{5}}}\). Reason : \(2 \mathrm{p}^{5}\) is stable due to half filled subshell.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
The most electronegative element is Fluorine whose electronic configuration is \(1 \mathrm{~s}^{2}, 2 \mathrm{~s}^{2}, 2 \mathrm{p}^{5}\). So option (3) is correct.
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES
313244
Assertion : For hydrogen like species, energy of an electron in a particular orbit decreases with increase in value of \({\text{Z}}\). Reason : Electronegativity decreases across a period.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
For hydrogen-like species, the energy of an electron in the nth orbit is determined by the equation: \(\mathrm{E}=\dfrac{-13.6 \times \mathrm{Z}^{2}}{\mathrm{n}^{2}}\) Electronegativity increases across a period. So option (3) is correct.
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES
313245
The electronegativity of K = 0.8 and Cl = 3.0. The type of bond formed between "K" and "Cl" is
1 Pure covalent bond
2 Hydrogen bond
3 Metallic bond
4 Electrovalent bond
Explanation:
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES
313246
Which is correct in the following?
1 Radius of Cl atoms is \({\rm{0}}{\rm{.99}}\mathop {\rm{A}}\limits^{\rm{^\circ }} \), while that of \({\rm{C}}{{\rm{l}}^{\rm{ + }}}\) ion is \({\rm{1}}{\rm{.54}}\mathop {\rm{A}}\limits^{\rm{^\circ }} \)
2 Radius of Cl atoms is \({\rm{0}}{\rm{.99}}\mathop {\rm{A}}\limits^{\rm{^\circ }} \), while that of Na atom is \({\rm{1}}{\rm{.54}}\mathop {\rm{A}}\limits^{\rm{^\circ }} \)
3 Radius of Cl atoms is \({\rm{0}}{\rm{.95}}\mathop {\rm{A}}\limits^{\rm{^\circ }} \), while that of \({\rm{C}}{{\rm{l}}^{\rm{ - }}}\) ion is \({\rm{0}}{\rm{.81}}\mathop {\rm{A}}\limits^{\rm{^\circ }} \)
4 Radius of Na atoms is \({\rm{0}}{\rm{.95}}\mathop {\rm{A}}\limits^{\rm{^\circ }} \), while that of \({\rm{N}}{{\rm{a}}^{\rm{ + }}}\) ion is \({\rm{1}}{\rm{.54}}\mathop {\rm{A}}\limits^{\rm{^\circ }} \)
Explanation:
The atomic radius decreases along the period. Also cations are always smaller than their parent atoms and anions are always larger than their parent atom.
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES
313243
Assertion : Outermost electronic configuration of most electronegative element is \({\text{2}}{{\text{s}}^{\text{2}}}{\text{2}}{{\text{p}}^{\text{5}}}\). Reason : \(2 \mathrm{p}^{5}\) is stable due to half filled subshell.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
The most electronegative element is Fluorine whose electronic configuration is \(1 \mathrm{~s}^{2}, 2 \mathrm{~s}^{2}, 2 \mathrm{p}^{5}\). So option (3) is correct.
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES
313244
Assertion : For hydrogen like species, energy of an electron in a particular orbit decreases with increase in value of \({\text{Z}}\). Reason : Electronegativity decreases across a period.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
For hydrogen-like species, the energy of an electron in the nth orbit is determined by the equation: \(\mathrm{E}=\dfrac{-13.6 \times \mathrm{Z}^{2}}{\mathrm{n}^{2}}\) Electronegativity increases across a period. So option (3) is correct.
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES
313245
The electronegativity of K = 0.8 and Cl = 3.0. The type of bond formed between "K" and "Cl" is
1 Pure covalent bond
2 Hydrogen bond
3 Metallic bond
4 Electrovalent bond
Explanation:
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES
313246
Which is correct in the following?
1 Radius of Cl atoms is \({\rm{0}}{\rm{.99}}\mathop {\rm{A}}\limits^{\rm{^\circ }} \), while that of \({\rm{C}}{{\rm{l}}^{\rm{ + }}}\) ion is \({\rm{1}}{\rm{.54}}\mathop {\rm{A}}\limits^{\rm{^\circ }} \)
2 Radius of Cl atoms is \({\rm{0}}{\rm{.99}}\mathop {\rm{A}}\limits^{\rm{^\circ }} \), while that of Na atom is \({\rm{1}}{\rm{.54}}\mathop {\rm{A}}\limits^{\rm{^\circ }} \)
3 Radius of Cl atoms is \({\rm{0}}{\rm{.95}}\mathop {\rm{A}}\limits^{\rm{^\circ }} \), while that of \({\rm{C}}{{\rm{l}}^{\rm{ - }}}\) ion is \({\rm{0}}{\rm{.81}}\mathop {\rm{A}}\limits^{\rm{^\circ }} \)
4 Radius of Na atoms is \({\rm{0}}{\rm{.95}}\mathop {\rm{A}}\limits^{\rm{^\circ }} \), while that of \({\rm{N}}{{\rm{a}}^{\rm{ + }}}\) ion is \({\rm{1}}{\rm{.54}}\mathop {\rm{A}}\limits^{\rm{^\circ }} \)
Explanation:
The atomic radius decreases along the period. Also cations are always smaller than their parent atoms and anions are always larger than their parent atom.
