162417
Transition metals exhibit the property of :
1 Formation of coloured salt
2 Variable oxidation states
3 Inert pair effect
4 Both (a) and (b.)
Explanation:
Inert pair effect is not shown by transition element.
NCERT-XII-91
9 RBTS PAPER
162418
The atomic number of \(\mathrm{V}, \mathrm{Cr}, \mathrm{Mn}\) and \(\mathrm{Fe}\) are respectively \(23,24,25\) and 26 . Which one of these may be expected to have the highest third ionisation enthalpy :
1 \(\mathrm{V}\)
2 \(\mathrm{Cr}\)
3 \(\mathrm{Mn}\)
4 \(\mathrm{Fe}\)
Explanation:
Order of third ionization
\(\mathrm{V}<\mathrm{Cr}<\mathrm{Fe}<\mathrm{Mn}\)
NCERT-XII-95
9 RBTS PAPER
162425
A transition element \(X\) has a configuration \([\mathrm{Ar}] 3 \mathrm{~d}^4\) in its \(\mathbf{+} \mathbf{2}\) oxidation state. Its atomic number is :
1 22
2 19
3 24
4 26
Explanation:
Its electronic configuration will be \( 3 \mathrm{~d}^5 4 \mathrm{~s}^1\), it is \(\mathrm{Mn}\) and show its atomic number will be 24 .
NCERT-XII-94
9 RBTS PAPER
162426
Correct statement regarding \(\mathrm{CO}\) is / are :
A. It is used in Mond's process
B. It act at strong field ligands
C. CO molecule is diamagnetic
1 A and C
2 B and C
3 A and B
4 A, B and C
Explanation:
\(\mathrm{CO}\) is used in Mond's process and can not show back bonding and act as electron doner.
162417
Transition metals exhibit the property of :
1 Formation of coloured salt
2 Variable oxidation states
3 Inert pair effect
4 Both (a) and (b.)
Explanation:
Inert pair effect is not shown by transition element.
NCERT-XII-91
9 RBTS PAPER
162418
The atomic number of \(\mathrm{V}, \mathrm{Cr}, \mathrm{Mn}\) and \(\mathrm{Fe}\) are respectively \(23,24,25\) and 26 . Which one of these may be expected to have the highest third ionisation enthalpy :
1 \(\mathrm{V}\)
2 \(\mathrm{Cr}\)
3 \(\mathrm{Mn}\)
4 \(\mathrm{Fe}\)
Explanation:
Order of third ionization
\(\mathrm{V}<\mathrm{Cr}<\mathrm{Fe}<\mathrm{Mn}\)
NCERT-XII-95
9 RBTS PAPER
162425
A transition element \(X\) has a configuration \([\mathrm{Ar}] 3 \mathrm{~d}^4\) in its \(\mathbf{+} \mathbf{2}\) oxidation state. Its atomic number is :
1 22
2 19
3 24
4 26
Explanation:
Its electronic configuration will be \( 3 \mathrm{~d}^5 4 \mathrm{~s}^1\), it is \(\mathrm{Mn}\) and show its atomic number will be 24 .
NCERT-XII-94
9 RBTS PAPER
162426
Correct statement regarding \(\mathrm{CO}\) is / are :
A. It is used in Mond's process
B. It act at strong field ligands
C. CO molecule is diamagnetic
1 A and C
2 B and C
3 A and B
4 A, B and C
Explanation:
\(\mathrm{CO}\) is used in Mond's process and can not show back bonding and act as electron doner.
162417
Transition metals exhibit the property of :
1 Formation of coloured salt
2 Variable oxidation states
3 Inert pair effect
4 Both (a) and (b.)
Explanation:
Inert pair effect is not shown by transition element.
NCERT-XII-91
9 RBTS PAPER
162418
The atomic number of \(\mathrm{V}, \mathrm{Cr}, \mathrm{Mn}\) and \(\mathrm{Fe}\) are respectively \(23,24,25\) and 26 . Which one of these may be expected to have the highest third ionisation enthalpy :
1 \(\mathrm{V}\)
2 \(\mathrm{Cr}\)
3 \(\mathrm{Mn}\)
4 \(\mathrm{Fe}\)
Explanation:
Order of third ionization
\(\mathrm{V}<\mathrm{Cr}<\mathrm{Fe}<\mathrm{Mn}\)
NCERT-XII-95
9 RBTS PAPER
162425
A transition element \(X\) has a configuration \([\mathrm{Ar}] 3 \mathrm{~d}^4\) in its \(\mathbf{+} \mathbf{2}\) oxidation state. Its atomic number is :
1 22
2 19
3 24
4 26
Explanation:
Its electronic configuration will be \( 3 \mathrm{~d}^5 4 \mathrm{~s}^1\), it is \(\mathrm{Mn}\) and show its atomic number will be 24 .
NCERT-XII-94
9 RBTS PAPER
162426
Correct statement regarding \(\mathrm{CO}\) is / are :
A. It is used in Mond's process
B. It act at strong field ligands
C. CO molecule is diamagnetic
1 A and C
2 B and C
3 A and B
4 A, B and C
Explanation:
\(\mathrm{CO}\) is used in Mond's process and can not show back bonding and act as electron doner.
162417
Transition metals exhibit the property of :
1 Formation of coloured salt
2 Variable oxidation states
3 Inert pair effect
4 Both (a) and (b.)
Explanation:
Inert pair effect is not shown by transition element.
NCERT-XII-91
9 RBTS PAPER
162418
The atomic number of \(\mathrm{V}, \mathrm{Cr}, \mathrm{Mn}\) and \(\mathrm{Fe}\) are respectively \(23,24,25\) and 26 . Which one of these may be expected to have the highest third ionisation enthalpy :
1 \(\mathrm{V}\)
2 \(\mathrm{Cr}\)
3 \(\mathrm{Mn}\)
4 \(\mathrm{Fe}\)
Explanation:
Order of third ionization
\(\mathrm{V}<\mathrm{Cr}<\mathrm{Fe}<\mathrm{Mn}\)
NCERT-XII-95
9 RBTS PAPER
162425
A transition element \(X\) has a configuration \([\mathrm{Ar}] 3 \mathrm{~d}^4\) in its \(\mathbf{+} \mathbf{2}\) oxidation state. Its atomic number is :
1 22
2 19
3 24
4 26
Explanation:
Its electronic configuration will be \( 3 \mathrm{~d}^5 4 \mathrm{~s}^1\), it is \(\mathrm{Mn}\) and show its atomic number will be 24 .
NCERT-XII-94
9 RBTS PAPER
162426
Correct statement regarding \(\mathrm{CO}\) is / are :
A. It is used in Mond's process
B. It act at strong field ligands
C. CO molecule is diamagnetic
1 A and C
2 B and C
3 A and B
4 A, B and C
Explanation:
\(\mathrm{CO}\) is used in Mond's process and can not show back bonding and act as electron doner.
