315722
Point out the incorrect statement regarding \(\mathrm{Be}\) (Group-IIA)
1 It forms an ionic carbide
2 Its carbonate decomposes on heating
3 It halides are covalent
4 It is easily attacked by water
Explanation:
Conceptual Questions
CHXI10:THE S-BLOCK ELEMENTS
315723
Among the alkaline earth metals, the element forming predominantly covalent compound is
1 Barium
2 Strontium
3 Calcium
4 Beryllium
Explanation:
Beryllium because of small atomic size and high ionization energy.
CHXI10:THE S-BLOCK ELEMENTS
315724
Beryllium shows diagonal relationship with aluminium. Which of the following similarity is incorrect?
1 Be forms beryllates and \(\mathrm{Al}\) forms aluminates
2 \(\mathrm{Be}(\mathrm{OH})_{2}\) like \(\mathrm{Al}(\mathrm{OH})_{3}\) is basic
3 Be like \(\mathrm{Al}\) is rendered passive by \(\mathrm{HNO}_{3}\)
4 \(\mathrm{Be}_{2} \mathrm{C}\) like \(\mathrm{Al}_{4} \mathrm{C}_{3}\) yields methane on hydrolysis.
Explanation:
The \(\mathrm{Be}(\mathrm{OH})_{2}\) and \(\mathrm{Al}(\mathrm{OH})_{3}\) are amphoteric in nature.
CHXI10:THE S-BLOCK ELEMENTS
315725
Which of the following statements is incorrect regarding the diagonal relationship between \(\mathrm{Al}\) and \(\mathrm{Be}\) ?
1 Oxides of both the elements are amphoteric
2 Hydrides of both the elements are ionic in nature
3 Carbides of both the elements give the same gas on hydrolysis
4 Under appropriate conditions, chlorides of both the elements dimerise
Explanation:
Conceptual Questions
CHXI10:THE S-BLOCK ELEMENTS
315726
What is bond angle between \({\mathrm{\mathrm{Cl}-\mathrm{Be}-\mathrm{Cl}}}\) angle in bridged structure of Beryllium chloride?
1 \(98^\circ \)
2 \(109^\circ {28^1}\)
3 \(120^\circ \)
4 \(103^\circ \)
Explanation:
The bridged structure of \({\mathrm{\mathrm{BeCl}_{2}}}\) consist of infinite chains as shown: Be is \({\mathrm{s p^{3}}}\) hybridised in this structure \({\mathrm{\mathrm{Cl}-\mathrm{Be}-\mathrm{Cl}}}\) bond angle \({\mathrm{=98^{\circ}}}\) \({\mathrm{\mathrm{Be}-\mathrm{Cl}-\mathrm{Be}}}\) bond angle \({\mathrm{=82^{\circ}}}\)
315722
Point out the incorrect statement regarding \(\mathrm{Be}\) (Group-IIA)
1 It forms an ionic carbide
2 Its carbonate decomposes on heating
3 It halides are covalent
4 It is easily attacked by water
Explanation:
Conceptual Questions
CHXI10:THE S-BLOCK ELEMENTS
315723
Among the alkaline earth metals, the element forming predominantly covalent compound is
1 Barium
2 Strontium
3 Calcium
4 Beryllium
Explanation:
Beryllium because of small atomic size and high ionization energy.
CHXI10:THE S-BLOCK ELEMENTS
315724
Beryllium shows diagonal relationship with aluminium. Which of the following similarity is incorrect?
1 Be forms beryllates and \(\mathrm{Al}\) forms aluminates
2 \(\mathrm{Be}(\mathrm{OH})_{2}\) like \(\mathrm{Al}(\mathrm{OH})_{3}\) is basic
3 Be like \(\mathrm{Al}\) is rendered passive by \(\mathrm{HNO}_{3}\)
4 \(\mathrm{Be}_{2} \mathrm{C}\) like \(\mathrm{Al}_{4} \mathrm{C}_{3}\) yields methane on hydrolysis.
Explanation:
The \(\mathrm{Be}(\mathrm{OH})_{2}\) and \(\mathrm{Al}(\mathrm{OH})_{3}\) are amphoteric in nature.
CHXI10:THE S-BLOCK ELEMENTS
315725
Which of the following statements is incorrect regarding the diagonal relationship between \(\mathrm{Al}\) and \(\mathrm{Be}\) ?
1 Oxides of both the elements are amphoteric
2 Hydrides of both the elements are ionic in nature
3 Carbides of both the elements give the same gas on hydrolysis
4 Under appropriate conditions, chlorides of both the elements dimerise
Explanation:
Conceptual Questions
CHXI10:THE S-BLOCK ELEMENTS
315726
What is bond angle between \({\mathrm{\mathrm{Cl}-\mathrm{Be}-\mathrm{Cl}}}\) angle in bridged structure of Beryllium chloride?
1 \(98^\circ \)
2 \(109^\circ {28^1}\)
3 \(120^\circ \)
4 \(103^\circ \)
Explanation:
The bridged structure of \({\mathrm{\mathrm{BeCl}_{2}}}\) consist of infinite chains as shown: Be is \({\mathrm{s p^{3}}}\) hybridised in this structure \({\mathrm{\mathrm{Cl}-\mathrm{Be}-\mathrm{Cl}}}\) bond angle \({\mathrm{=98^{\circ}}}\) \({\mathrm{\mathrm{Be}-\mathrm{Cl}-\mathrm{Be}}}\) bond angle \({\mathrm{=82^{\circ}}}\)
315722
Point out the incorrect statement regarding \(\mathrm{Be}\) (Group-IIA)
1 It forms an ionic carbide
2 Its carbonate decomposes on heating
3 It halides are covalent
4 It is easily attacked by water
Explanation:
Conceptual Questions
CHXI10:THE S-BLOCK ELEMENTS
315723
Among the alkaline earth metals, the element forming predominantly covalent compound is
1 Barium
2 Strontium
3 Calcium
4 Beryllium
Explanation:
Beryllium because of small atomic size and high ionization energy.
CHXI10:THE S-BLOCK ELEMENTS
315724
Beryllium shows diagonal relationship with aluminium. Which of the following similarity is incorrect?
1 Be forms beryllates and \(\mathrm{Al}\) forms aluminates
2 \(\mathrm{Be}(\mathrm{OH})_{2}\) like \(\mathrm{Al}(\mathrm{OH})_{3}\) is basic
3 Be like \(\mathrm{Al}\) is rendered passive by \(\mathrm{HNO}_{3}\)
4 \(\mathrm{Be}_{2} \mathrm{C}\) like \(\mathrm{Al}_{4} \mathrm{C}_{3}\) yields methane on hydrolysis.
Explanation:
The \(\mathrm{Be}(\mathrm{OH})_{2}\) and \(\mathrm{Al}(\mathrm{OH})_{3}\) are amphoteric in nature.
CHXI10:THE S-BLOCK ELEMENTS
315725
Which of the following statements is incorrect regarding the diagonal relationship between \(\mathrm{Al}\) and \(\mathrm{Be}\) ?
1 Oxides of both the elements are amphoteric
2 Hydrides of both the elements are ionic in nature
3 Carbides of both the elements give the same gas on hydrolysis
4 Under appropriate conditions, chlorides of both the elements dimerise
Explanation:
Conceptual Questions
CHXI10:THE S-BLOCK ELEMENTS
315726
What is bond angle between \({\mathrm{\mathrm{Cl}-\mathrm{Be}-\mathrm{Cl}}}\) angle in bridged structure of Beryllium chloride?
1 \(98^\circ \)
2 \(109^\circ {28^1}\)
3 \(120^\circ \)
4 \(103^\circ \)
Explanation:
The bridged structure of \({\mathrm{\mathrm{BeCl}_{2}}}\) consist of infinite chains as shown: Be is \({\mathrm{s p^{3}}}\) hybridised in this structure \({\mathrm{\mathrm{Cl}-\mathrm{Be}-\mathrm{Cl}}}\) bond angle \({\mathrm{=98^{\circ}}}\) \({\mathrm{\mathrm{Be}-\mathrm{Cl}-\mathrm{Be}}}\) bond angle \({\mathrm{=82^{\circ}}}\)
315722
Point out the incorrect statement regarding \(\mathrm{Be}\) (Group-IIA)
1 It forms an ionic carbide
2 Its carbonate decomposes on heating
3 It halides are covalent
4 It is easily attacked by water
Explanation:
Conceptual Questions
CHXI10:THE S-BLOCK ELEMENTS
315723
Among the alkaline earth metals, the element forming predominantly covalent compound is
1 Barium
2 Strontium
3 Calcium
4 Beryllium
Explanation:
Beryllium because of small atomic size and high ionization energy.
CHXI10:THE S-BLOCK ELEMENTS
315724
Beryllium shows diagonal relationship with aluminium. Which of the following similarity is incorrect?
1 Be forms beryllates and \(\mathrm{Al}\) forms aluminates
2 \(\mathrm{Be}(\mathrm{OH})_{2}\) like \(\mathrm{Al}(\mathrm{OH})_{3}\) is basic
3 Be like \(\mathrm{Al}\) is rendered passive by \(\mathrm{HNO}_{3}\)
4 \(\mathrm{Be}_{2} \mathrm{C}\) like \(\mathrm{Al}_{4} \mathrm{C}_{3}\) yields methane on hydrolysis.
Explanation:
The \(\mathrm{Be}(\mathrm{OH})_{2}\) and \(\mathrm{Al}(\mathrm{OH})_{3}\) are amphoteric in nature.
CHXI10:THE S-BLOCK ELEMENTS
315725
Which of the following statements is incorrect regarding the diagonal relationship between \(\mathrm{Al}\) and \(\mathrm{Be}\) ?
1 Oxides of both the elements are amphoteric
2 Hydrides of both the elements are ionic in nature
3 Carbides of both the elements give the same gas on hydrolysis
4 Under appropriate conditions, chlorides of both the elements dimerise
Explanation:
Conceptual Questions
CHXI10:THE S-BLOCK ELEMENTS
315726
What is bond angle between \({\mathrm{\mathrm{Cl}-\mathrm{Be}-\mathrm{Cl}}}\) angle in bridged structure of Beryllium chloride?
1 \(98^\circ \)
2 \(109^\circ {28^1}\)
3 \(120^\circ \)
4 \(103^\circ \)
Explanation:
The bridged structure of \({\mathrm{\mathrm{BeCl}_{2}}}\) consist of infinite chains as shown: Be is \({\mathrm{s p^{3}}}\) hybridised in this structure \({\mathrm{\mathrm{Cl}-\mathrm{Be}-\mathrm{Cl}}}\) bond angle \({\mathrm{=98^{\circ}}}\) \({\mathrm{\mathrm{Be}-\mathrm{Cl}-\mathrm{Be}}}\) bond angle \({\mathrm{=82^{\circ}}}\)
315722
Point out the incorrect statement regarding \(\mathrm{Be}\) (Group-IIA)
1 It forms an ionic carbide
2 Its carbonate decomposes on heating
3 It halides are covalent
4 It is easily attacked by water
Explanation:
Conceptual Questions
CHXI10:THE S-BLOCK ELEMENTS
315723
Among the alkaline earth metals, the element forming predominantly covalent compound is
1 Barium
2 Strontium
3 Calcium
4 Beryllium
Explanation:
Beryllium because of small atomic size and high ionization energy.
CHXI10:THE S-BLOCK ELEMENTS
315724
Beryllium shows diagonal relationship with aluminium. Which of the following similarity is incorrect?
1 Be forms beryllates and \(\mathrm{Al}\) forms aluminates
2 \(\mathrm{Be}(\mathrm{OH})_{2}\) like \(\mathrm{Al}(\mathrm{OH})_{3}\) is basic
3 Be like \(\mathrm{Al}\) is rendered passive by \(\mathrm{HNO}_{3}\)
4 \(\mathrm{Be}_{2} \mathrm{C}\) like \(\mathrm{Al}_{4} \mathrm{C}_{3}\) yields methane on hydrolysis.
Explanation:
The \(\mathrm{Be}(\mathrm{OH})_{2}\) and \(\mathrm{Al}(\mathrm{OH})_{3}\) are amphoteric in nature.
CHXI10:THE S-BLOCK ELEMENTS
315725
Which of the following statements is incorrect regarding the diagonal relationship between \(\mathrm{Al}\) and \(\mathrm{Be}\) ?
1 Oxides of both the elements are amphoteric
2 Hydrides of both the elements are ionic in nature
3 Carbides of both the elements give the same gas on hydrolysis
4 Under appropriate conditions, chlorides of both the elements dimerise
Explanation:
Conceptual Questions
CHXI10:THE S-BLOCK ELEMENTS
315726
What is bond angle between \({\mathrm{\mathrm{Cl}-\mathrm{Be}-\mathrm{Cl}}}\) angle in bridged structure of Beryllium chloride?
1 \(98^\circ \)
2 \(109^\circ {28^1}\)
3 \(120^\circ \)
4 \(103^\circ \)
Explanation:
The bridged structure of \({\mathrm{\mathrm{BeCl}_{2}}}\) consist of infinite chains as shown: Be is \({\mathrm{s p^{3}}}\) hybridised in this structure \({\mathrm{\mathrm{Cl}-\mathrm{Be}-\mathrm{Cl}}}\) bond angle \({\mathrm{=98^{\circ}}}\) \({\mathrm{\mathrm{Be}-\mathrm{Cl}-\mathrm{Be}}}\) bond angle \({\mathrm{=82^{\circ}}}\)
