190046
Assertion : Atomic radius of gallium is higher than that of aluminiumReason : The presence of additional \(d-\) electron offer poor screening effect for the outer electrons from increased nuclear charge.
1 If the Assertion is correct but Reason is incorrect.
2 If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.
3 If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
4 If both the Assertion and Reason are incorrect.
Explanation:
Atomic radius of gallium is less than that of aluminium.
11. THE P-BLOCK ELEMENTS
190047
Which of the following is incorrect statement ?
1 \(PbF_4\) is covalent in nature
2 \(SiCl_4\) is easily hydrolysed
3 \(GeX_4\; (X = F, Cl, Br, I)\) is more stable than \(GeX_2\)
4 \(SnF_4\) is ionic in nature
Explanation:
\(PbF_4\) is an ionic compound due to large size of cation and small size of anion. Rest all are correct options
11. THE P-BLOCK ELEMENTS
190049
Which of the following compounds is used in cosmetic surgery?
1 Silica
2 Silicates
3 Silicones
4 Zeolites
Explanation:
Silicones are used as sealant, greases,electrical insulators and for water proofing of fabrics. Being biocompatible they are also used in surgical and cosmetic plants.
11. THE P-BLOCK ELEMENTS
190051
The correct order of atomic radii in group \(13\) elements is
190046
Assertion : Atomic radius of gallium is higher than that of aluminiumReason : The presence of additional \(d-\) electron offer poor screening effect for the outer electrons from increased nuclear charge.
1 If the Assertion is correct but Reason is incorrect.
2 If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.
3 If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
4 If both the Assertion and Reason are incorrect.
Explanation:
Atomic radius of gallium is less than that of aluminium.
11. THE P-BLOCK ELEMENTS
190047
Which of the following is incorrect statement ?
1 \(PbF_4\) is covalent in nature
2 \(SiCl_4\) is easily hydrolysed
3 \(GeX_4\; (X = F, Cl, Br, I)\) is more stable than \(GeX_2\)
4 \(SnF_4\) is ionic in nature
Explanation:
\(PbF_4\) is an ionic compound due to large size of cation and small size of anion. Rest all are correct options
11. THE P-BLOCK ELEMENTS
190049
Which of the following compounds is used in cosmetic surgery?
1 Silica
2 Silicates
3 Silicones
4 Zeolites
Explanation:
Silicones are used as sealant, greases,electrical insulators and for water proofing of fabrics. Being biocompatible they are also used in surgical and cosmetic plants.
11. THE P-BLOCK ELEMENTS
190051
The correct order of atomic radii in group \(13\) elements is
190046
Assertion : Atomic radius of gallium is higher than that of aluminiumReason : The presence of additional \(d-\) electron offer poor screening effect for the outer electrons from increased nuclear charge.
1 If the Assertion is correct but Reason is incorrect.
2 If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.
3 If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
4 If both the Assertion and Reason are incorrect.
Explanation:
Atomic radius of gallium is less than that of aluminium.
11. THE P-BLOCK ELEMENTS
190047
Which of the following is incorrect statement ?
1 \(PbF_4\) is covalent in nature
2 \(SiCl_4\) is easily hydrolysed
3 \(GeX_4\; (X = F, Cl, Br, I)\) is more stable than \(GeX_2\)
4 \(SnF_4\) is ionic in nature
Explanation:
\(PbF_4\) is an ionic compound due to large size of cation and small size of anion. Rest all are correct options
11. THE P-BLOCK ELEMENTS
190049
Which of the following compounds is used in cosmetic surgery?
1 Silica
2 Silicates
3 Silicones
4 Zeolites
Explanation:
Silicones are used as sealant, greases,electrical insulators and for water proofing of fabrics. Being biocompatible they are also used in surgical and cosmetic plants.
11. THE P-BLOCK ELEMENTS
190051
The correct order of atomic radii in group \(13\) elements is
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11. THE P-BLOCK ELEMENTS
190046
Assertion : Atomic radius of gallium is higher than that of aluminiumReason : The presence of additional \(d-\) electron offer poor screening effect for the outer electrons from increased nuclear charge.
1 If the Assertion is correct but Reason is incorrect.
2 If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.
3 If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
4 If both the Assertion and Reason are incorrect.
Explanation:
Atomic radius of gallium is less than that of aluminium.
11. THE P-BLOCK ELEMENTS
190047
Which of the following is incorrect statement ?
1 \(PbF_4\) is covalent in nature
2 \(SiCl_4\) is easily hydrolysed
3 \(GeX_4\; (X = F, Cl, Br, I)\) is more stable than \(GeX_2\)
4 \(SnF_4\) is ionic in nature
Explanation:
\(PbF_4\) is an ionic compound due to large size of cation and small size of anion. Rest all are correct options
11. THE P-BLOCK ELEMENTS
190049
Which of the following compounds is used in cosmetic surgery?
1 Silica
2 Silicates
3 Silicones
4 Zeolites
Explanation:
Silicones are used as sealant, greases,electrical insulators and for water proofing of fabrics. Being biocompatible they are also used in surgical and cosmetic plants.
11. THE P-BLOCK ELEMENTS
190051
The correct order of atomic radii in group \(13\) elements is
190046
Assertion : Atomic radius of gallium is higher than that of aluminiumReason : The presence of additional \(d-\) electron offer poor screening effect for the outer electrons from increased nuclear charge.
1 If the Assertion is correct but Reason is incorrect.
2 If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.
3 If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
4 If both the Assertion and Reason are incorrect.
Explanation:
Atomic radius of gallium is less than that of aluminium.
11. THE P-BLOCK ELEMENTS
190047
Which of the following is incorrect statement ?
1 \(PbF_4\) is covalent in nature
2 \(SiCl_4\) is easily hydrolysed
3 \(GeX_4\; (X = F, Cl, Br, I)\) is more stable than \(GeX_2\)
4 \(SnF_4\) is ionic in nature
Explanation:
\(PbF_4\) is an ionic compound due to large size of cation and small size of anion. Rest all are correct options
11. THE P-BLOCK ELEMENTS
190049
Which of the following compounds is used in cosmetic surgery?
1 Silica
2 Silicates
3 Silicones
4 Zeolites
Explanation:
Silicones are used as sealant, greases,electrical insulators and for water proofing of fabrics. Being biocompatible they are also used in surgical and cosmetic plants.
11. THE P-BLOCK ELEMENTS
190051
The correct order of atomic radii in group \(13\) elements is