Answer Q90, 91, 92 showing detailed explanations. Directions summarisedAB1,2,31,22,3OnlyAllOnlyOnlycorrectcorrectcorrectcorrect o Scandium and Zinc are not considerentransition elements because they1 do not form complexes2 exist only in one oxidation statedo not form ions in which the 34.84 The olements in between Sc-Zn1.all show paramagnetism2 form ocloured hydrated ions in aqueoussolution3.3. form ions that hive incompletely filled3d-subshell.subshell is partially filled.92 d-biock element85 This question relates to compounds ofchromium1.have variable oxidation state1.their +2 oxidation state is common at2.the beginning of the series.3. form complex ionschromium can form chormate(VII) anddichromate (Vil) compounds which arerespectively orange and yellow incolour2.In order to form a complex ionthe central metal ion or atom shoul93.the dichromate compound is made byaciditying solutions of the chromatecompound.3.1.h ve low laying d and s-orbitals.2. the ligand should have at least a donorthe chromate compound is tetrahedralin shape with delocalised bonds.atom3. the central metal ion should be smaliand highly charged.86. Which of the ligand(s) below islara strongfield splitting ligand(s)?1. lodo2. hydroxo3. carbonyl94. Carbon in cast ironlowers its melting2.1.increases Its hardness and decreasesits ductility3. decreases its hardness and increasesits ductility87Tetraammine dicyano vanadium(11)95. The systematic name of [Co(en),CLINO s1. bis ethylenediamine dichloro cobaltinnitrate1.is a neutral complex2.can exhibit geometric isomerism3.is an octahedral complexbis ethylene diamine dichloro cobaitale(i) nitrate3. dichlorobisethylene diamine coball (i)nitrate2.88. Which of the following ligands can serve inlinkage isomerism1. C N]96. Optical isomerism in complexes1. have mirror image isomers that arenonsuperimposible2. have isomers that are physicallyidentical in all ways.3. have isomers that differ in the way theyrotate the plane of polarised light.2.3.89. Complex ions formed by d-block elementsmay1.cationic2. neutral3. anionic90. Across the first series of d-block elements1.first ionisation energy gradualdecreases with decrease in atomicnumber of elements.2. electrons are filling theh 4s subshell aswell.3. atomic radius generally decreases aseifective nuclear charge increases.

91 Scandium and Zinc are not considered as atween Sc Zn magnetism hydrated ions in aquecus transition elements because they 1. do not form complexes 2 exist only in one oxidation state 3. do not form ions in which the 34. subsholl is partially filled hive incompletoly filled 92 d-block element 1. have variable oxidation state 2. their +2 oxidation state is common at the beginning of the series. 3. form complex ions ates to compounds of form chormato(VII) and I) compounds which are ange and yellow in 93. In order to form a complex ion 1. the central metal ion or atom shoul hve low laying d and s-orbitals. 2. the ligand should have at least a donor a compound is made by ions of the chromate compound is tutrahedral Jelocalised bonds. atom 3. the central metal ion should be small and highly charged. d(s) below is/aro strong 1(s)? 94. Carbon in cast iron 1. lowers its melting

91 Scandium and Zinc are not considered as atween Sc Zn magnetism hydrated ions in aquecus transition elements because they 1. do not form complexes 2 exist only in one oxidation state 3. do not form ions in which the 34. subsholl is partially filled hive incompletoly filled 92 d-block element 1. have variable oxidation state 2. their +2 oxidation state is common at the beginning of the series. 3. form complex ions ates to compounds of form chormato(VII) and I) compounds which are ange and yellow in 93. In order to form a complex ion 1. the central metal ion or atom shoul hve low laying d and s-orbitals. 2. the ligand should have at least a donor a compound is made by ions of the chromate compound is tutrahedral Jelocalised bonds. atom 3. the central metal ion should be small and highly charged. d(s) below is/aro strong 1(s)? 94. Carbon in cast iron 1. lowers its melting

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Concept explainers

Mass Spectrometry

This process is an instrumental method in which a sample is changed to fast moving positive ions by electron bombardment. The charged particles vary due to their different mass to charge ratio and are estimated with the help of this difference. It is also called mass spectroscopy.

Question

Answer Q90, 91, 92 showing detailed explanations.

Directions summarised
A
B
1,2,3
1,2
2,3
Only
All
Only
Only
correct
correct
correct
correct

o Scandium and Zinc are not consideren
transition elements because they
1 do not form complexes
2 exist only in one oxidation state
do not form ions in which the 34.
84 The olements in between Sc-Zn
1.
all show paramagnetism
2 form ocloured hydrated ions in aqueous
solution
3.
3. form ions that hive incompletely filled
3d-subshell.
subshell is partially filled.
92 d-biock element
85 This question relates to compounds of
chromium
1.
have variable oxidation state
1.
their +2 oxidation state is common at
2.
the beginning of the series.
3. form complex ions
chromium can form chormate(VII) and
dichromate (Vil) compounds which are
respectively orange and yellow in
colour
2.
In order to form a complex ion
the central metal ion or atom shoul
93.
the dichromate compound is made by
aciditying solutions of the chromate
compound.
3.
1.
h ve low laying d and s-orbitals.
2. the ligand should have at least a donor
the chromate compound is tetrahedral
in shape with delocalised bonds.
atom
3. the central metal ion should be smali
and highly charged.
86. Which of the ligand(s) below islara strong
field splitting ligand(s)?
1. lodo
2. hydroxo
3. carbonyl
94. Carbon in cast iron
lowers its melting
2.
1.
increases Its hardness and decreases
its ductility
3. decreases its hardness and increases
its ductility
87
Tetraammine dicyano vanadium(11)
95. The systematic name of [Co(en),CLINO s
1. bis ethylenediamine dichloro cobaltin
nitrate
1.
is a neutral complex
2.
can exhibit geometric isomerism
3.
is an octahedral complex
bis ethylene diamine dichloro cobaitale
(i) nitrate
3. dichlorobisethylene diamine coball (i)
nitrate
2.
88. Which of the following ligands can serve in
linkage isomerism
1. C N]
96. Optical isomerism in complexes
1. have mirror image isomers that are
nonsuperimposible
2. have isomers that are physically
identical in all ways.
3. have isomers that differ in the way they
rotate the plane of polarised light.
2.
3.
89. Complex ions formed by d-block elements
may
1.
cationic
2. neutral
3. anionic
90. Across the first series of d-block elements
1.
first ionisation energy gradual
decreases with decrease in atomic
number of elements.
2. electrons are filling theh 4s subshell as
well.
3. atomic radius generally decreases as
eifective nuclear charge increases.

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