CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES
313146
Name the element in the periodic table forming maximum number of compounds.
1 C
2 H
3 O
4 F
Explanation:
Hydrogen forms maximum number of compounds.
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES
313147
A common trend to both group I and VII elements in the periodic table, as the atomic number increases is
1 Oxidising power increases
2 Atomic radius increases
3 Maximum valency increases
4 Reactivity with water increases
Explanation:
Atomic radius increases as atomic number increases in a group.
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES
313148
Which of the following elements can show covalency greater than 4?
1 Be
2 P
3 C
4 B
Explanation:
Due to the availability of empty d-orbitals
NCERT Exemplar
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES
313149
An element ‘R’ is in group 13. The true statement with respect to R is
1 It is a gas at room temperature
2 It has an oxidation state of 4.
3 It forms an oxide \({{\rm{R}}_{\rm{2}}}{{\rm{O}}_{\rm{3}}}{\rm{.}}\)
4 It forms a halide of the type \({\rm{R}}{{\rm{X}}_{\rm{2}}}{\rm{.}}\)
Explanation:
Elements belonging to Group 13 are solids at room temperature and exihibit an oxidation state of +3. Formula of its oxide \( \Rightarrow {{\rm{R}}_{\rm{2}}}{{\rm{O}}_{\rm{3}}}\) Formula of its halide \( \Rightarrow {\rm{RC}}{{\rm{l}}_{\rm{3}}}\)
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES
313146
Name the element in the periodic table forming maximum number of compounds.
1 C
2 H
3 O
4 F
Explanation:
Hydrogen forms maximum number of compounds.
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES
313147
A common trend to both group I and VII elements in the periodic table, as the atomic number increases is
1 Oxidising power increases
2 Atomic radius increases
3 Maximum valency increases
4 Reactivity with water increases
Explanation:
Atomic radius increases as atomic number increases in a group.
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES
313148
Which of the following elements can show covalency greater than 4?
1 Be
2 P
3 C
4 B
Explanation:
Due to the availability of empty d-orbitals
NCERT Exemplar
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES
313149
An element ‘R’ is in group 13. The true statement with respect to R is
1 It is a gas at room temperature
2 It has an oxidation state of 4.
3 It forms an oxide \({{\rm{R}}_{\rm{2}}}{{\rm{O}}_{\rm{3}}}{\rm{.}}\)
4 It forms a halide of the type \({\rm{R}}{{\rm{X}}_{\rm{2}}}{\rm{.}}\)
Explanation:
Elements belonging to Group 13 are solids at room temperature and exihibit an oxidation state of +3. Formula of its oxide \( \Rightarrow {{\rm{R}}_{\rm{2}}}{{\rm{O}}_{\rm{3}}}\) Formula of its halide \( \Rightarrow {\rm{RC}}{{\rm{l}}_{\rm{3}}}\)
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES
313146
Name the element in the periodic table forming maximum number of compounds.
1 C
2 H
3 O
4 F
Explanation:
Hydrogen forms maximum number of compounds.
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES
313147
A common trend to both group I and VII elements in the periodic table, as the atomic number increases is
1 Oxidising power increases
2 Atomic radius increases
3 Maximum valency increases
4 Reactivity with water increases
Explanation:
Atomic radius increases as atomic number increases in a group.
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES
313148
Which of the following elements can show covalency greater than 4?
1 Be
2 P
3 C
4 B
Explanation:
Due to the availability of empty d-orbitals
NCERT Exemplar
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES
313149
An element ‘R’ is in group 13. The true statement with respect to R is
1 It is a gas at room temperature
2 It has an oxidation state of 4.
3 It forms an oxide \({{\rm{R}}_{\rm{2}}}{{\rm{O}}_{\rm{3}}}{\rm{.}}\)
4 It forms a halide of the type \({\rm{R}}{{\rm{X}}_{\rm{2}}}{\rm{.}}\)
Explanation:
Elements belonging to Group 13 are solids at room temperature and exihibit an oxidation state of +3. Formula of its oxide \( \Rightarrow {{\rm{R}}_{\rm{2}}}{{\rm{O}}_{\rm{3}}}\) Formula of its halide \( \Rightarrow {\rm{RC}}{{\rm{l}}_{\rm{3}}}\)
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES
313146
Name the element in the periodic table forming maximum number of compounds.
1 C
2 H
3 O
4 F
Explanation:
Hydrogen forms maximum number of compounds.
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES
313147
A common trend to both group I and VII elements in the periodic table, as the atomic number increases is
1 Oxidising power increases
2 Atomic radius increases
3 Maximum valency increases
4 Reactivity with water increases
Explanation:
Atomic radius increases as atomic number increases in a group.
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES
313148
Which of the following elements can show covalency greater than 4?
1 Be
2 P
3 C
4 B
Explanation:
Due to the availability of empty d-orbitals
NCERT Exemplar
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES
313149
An element ‘R’ is in group 13. The true statement with respect to R is
1 It is a gas at room temperature
2 It has an oxidation state of 4.
3 It forms an oxide \({{\rm{R}}_{\rm{2}}}{{\rm{O}}_{\rm{3}}}{\rm{.}}\)
4 It forms a halide of the type \({\rm{R}}{{\rm{X}}_{\rm{2}}}{\rm{.}}\)
Explanation:
Elements belonging to Group 13 are solids at room temperature and exihibit an oxidation state of +3. Formula of its oxide \( \Rightarrow {{\rm{R}}_{\rm{2}}}{{\rm{O}}_{\rm{3}}}\) Formula of its halide \( \Rightarrow {\rm{RC}}{{\rm{l}}_{\rm{3}}}\)
