Classification of Elements and Periodicity in Properties
89314
Which one of the following represents the correct order of electron releasing tendency of metals?
1 $\mathrm{Zn}>\mathrm{Cu}>\mathrm{Ag}$
2 $\mathrm{Ag}>\mathrm{Cu}>\mathrm{Zn}$
3 $\mathrm{Cu}>\mathrm{Zn}>\mathrm{Ag}$
4 $\mathrm{Cu}>\mathrm{Ag}>\mathrm{Zn}$
Explanation:
The correct order of electron releasing tendency of metals are- $$ \mathrm{Ag}>\mathrm{Cu}>\mathrm{Zn} $$ The tendency of metals to lose electron is determine by their position in electrochemical series.
NDA (II)-2019
Classification of Elements and Periodicity in Properties
89326
The oxidation state of oxygen is zero in
1 $\mathrm{CO}$
2 $\mathrm{O}_3$
3 $\mathrm{SO}_2$
4 $\mathrm{H}_2 \mathrm{O}_2$
Explanation:
For carbon monoxide, the sum of the individual oxidation number of the constituent atoms must equal the charge on the ion, Hence, the oxidation number oxygen -2 . The oxidation number of an oxygen atom in the ozone is zero. Average oxidation state $=\frac{-1+1+0}{3}=0$
CG PET -2007
Classification of Elements and Periodicity in Properties
89337
An f-shell containing 6 unpaired electrons can exchange 2. Periodic Laws
1 6 electrons
2 9 electrons
3 12 electrons
4 15 electrons
Explanation:
The electron with same spin present in the degenerate orbitals tends to exchange their position The possible exchange of $\mathrm{f}^6$ - configuration Thus, the total exchange of $\mathrm{f}^6-$ configuration is $=5+4+3+2+1=15$ electrons.
2014
Classification of Elements and Periodicity in Properties
89319
The number of electrons is the valence shell of the central atom of a molecules is 8 . The molecule is
1 $\mathrm{BCl}_3$
2 $\mathrm{BeH}_2$
3 $\mathrm{SCl}_2$
4 $\mathrm{SF}_6$
Explanation:
The number of electrons is the valence shell of the central atom of a molecules is 8 . The molecule is $\mathrm{SCl}_2$. The central $\mathrm{S}$ atom has 2 bond pairs of electrons and 2 lone pairs of electrons.
Classification of Elements and Periodicity in Properties
89314
Which one of the following represents the correct order of electron releasing tendency of metals?
1 $\mathrm{Zn}>\mathrm{Cu}>\mathrm{Ag}$
2 $\mathrm{Ag}>\mathrm{Cu}>\mathrm{Zn}$
3 $\mathrm{Cu}>\mathrm{Zn}>\mathrm{Ag}$
4 $\mathrm{Cu}>\mathrm{Ag}>\mathrm{Zn}$
Explanation:
The correct order of electron releasing tendency of metals are- $$ \mathrm{Ag}>\mathrm{Cu}>\mathrm{Zn} $$ The tendency of metals to lose electron is determine by their position in electrochemical series.
NDA (II)-2019
Classification of Elements and Periodicity in Properties
89326
The oxidation state of oxygen is zero in
1 $\mathrm{CO}$
2 $\mathrm{O}_3$
3 $\mathrm{SO}_2$
4 $\mathrm{H}_2 \mathrm{O}_2$
Explanation:
For carbon monoxide, the sum of the individual oxidation number of the constituent atoms must equal the charge on the ion, Hence, the oxidation number oxygen -2 . The oxidation number of an oxygen atom in the ozone is zero. Average oxidation state $=\frac{-1+1+0}{3}=0$
CG PET -2007
Classification of Elements and Periodicity in Properties
89337
An f-shell containing 6 unpaired electrons can exchange 2. Periodic Laws
1 6 electrons
2 9 electrons
3 12 electrons
4 15 electrons
Explanation:
The electron with same spin present in the degenerate orbitals tends to exchange their position The possible exchange of $\mathrm{f}^6$ - configuration Thus, the total exchange of $\mathrm{f}^6-$ configuration is $=5+4+3+2+1=15$ electrons.
2014
Classification of Elements and Periodicity in Properties
89319
The number of electrons is the valence shell of the central atom of a molecules is 8 . The molecule is
1 $\mathrm{BCl}_3$
2 $\mathrm{BeH}_2$
3 $\mathrm{SCl}_2$
4 $\mathrm{SF}_6$
Explanation:
The number of electrons is the valence shell of the central atom of a molecules is 8 . The molecule is $\mathrm{SCl}_2$. The central $\mathrm{S}$ atom has 2 bond pairs of electrons and 2 lone pairs of electrons.
Classification of Elements and Periodicity in Properties
89314
Which one of the following represents the correct order of electron releasing tendency of metals?
1 $\mathrm{Zn}>\mathrm{Cu}>\mathrm{Ag}$
2 $\mathrm{Ag}>\mathrm{Cu}>\mathrm{Zn}$
3 $\mathrm{Cu}>\mathrm{Zn}>\mathrm{Ag}$
4 $\mathrm{Cu}>\mathrm{Ag}>\mathrm{Zn}$
Explanation:
The correct order of electron releasing tendency of metals are- $$ \mathrm{Ag}>\mathrm{Cu}>\mathrm{Zn} $$ The tendency of metals to lose electron is determine by their position in electrochemical series.
NDA (II)-2019
Classification of Elements and Periodicity in Properties
89326
The oxidation state of oxygen is zero in
1 $\mathrm{CO}$
2 $\mathrm{O}_3$
3 $\mathrm{SO}_2$
4 $\mathrm{H}_2 \mathrm{O}_2$
Explanation:
For carbon monoxide, the sum of the individual oxidation number of the constituent atoms must equal the charge on the ion, Hence, the oxidation number oxygen -2 . The oxidation number of an oxygen atom in the ozone is zero. Average oxidation state $=\frac{-1+1+0}{3}=0$
CG PET -2007
Classification of Elements and Periodicity in Properties
89337
An f-shell containing 6 unpaired electrons can exchange 2. Periodic Laws
1 6 electrons
2 9 electrons
3 12 electrons
4 15 electrons
Explanation:
The electron with same spin present in the degenerate orbitals tends to exchange their position The possible exchange of $\mathrm{f}^6$ - configuration Thus, the total exchange of $\mathrm{f}^6-$ configuration is $=5+4+3+2+1=15$ electrons.
2014
Classification of Elements and Periodicity in Properties
89319
The number of electrons is the valence shell of the central atom of a molecules is 8 . The molecule is
1 $\mathrm{BCl}_3$
2 $\mathrm{BeH}_2$
3 $\mathrm{SCl}_2$
4 $\mathrm{SF}_6$
Explanation:
The number of electrons is the valence shell of the central atom of a molecules is 8 . The molecule is $\mathrm{SCl}_2$. The central $\mathrm{S}$ atom has 2 bond pairs of electrons and 2 lone pairs of electrons.
NEET Test Series from KOTA - 10 Papers In MS WORD
WhatsApp Here
Classification of Elements and Periodicity in Properties
89314
Which one of the following represents the correct order of electron releasing tendency of metals?
1 $\mathrm{Zn}>\mathrm{Cu}>\mathrm{Ag}$
2 $\mathrm{Ag}>\mathrm{Cu}>\mathrm{Zn}$
3 $\mathrm{Cu}>\mathrm{Zn}>\mathrm{Ag}$
4 $\mathrm{Cu}>\mathrm{Ag}>\mathrm{Zn}$
Explanation:
The correct order of electron releasing tendency of metals are- $$ \mathrm{Ag}>\mathrm{Cu}>\mathrm{Zn} $$ The tendency of metals to lose electron is determine by their position in electrochemical series.
NDA (II)-2019
Classification of Elements and Periodicity in Properties
89326
The oxidation state of oxygen is zero in
1 $\mathrm{CO}$
2 $\mathrm{O}_3$
3 $\mathrm{SO}_2$
4 $\mathrm{H}_2 \mathrm{O}_2$
Explanation:
For carbon monoxide, the sum of the individual oxidation number of the constituent atoms must equal the charge on the ion, Hence, the oxidation number oxygen -2 . The oxidation number of an oxygen atom in the ozone is zero. Average oxidation state $=\frac{-1+1+0}{3}=0$
CG PET -2007
Classification of Elements and Periodicity in Properties
89337
An f-shell containing 6 unpaired electrons can exchange 2. Periodic Laws
1 6 electrons
2 9 electrons
3 12 electrons
4 15 electrons
Explanation:
The electron with same spin present in the degenerate orbitals tends to exchange their position The possible exchange of $\mathrm{f}^6$ - configuration Thus, the total exchange of $\mathrm{f}^6-$ configuration is $=5+4+3+2+1=15$ electrons.
2014
Classification of Elements and Periodicity in Properties
89319
The number of electrons is the valence shell of the central atom of a molecules is 8 . The molecule is
1 $\mathrm{BCl}_3$
2 $\mathrm{BeH}_2$
3 $\mathrm{SCl}_2$
4 $\mathrm{SF}_6$
Explanation:
The number of electrons is the valence shell of the central atom of a molecules is 8 . The molecule is $\mathrm{SCl}_2$. The central $\mathrm{S}$ atom has 2 bond pairs of electrons and 2 lone pairs of electrons.
