s block elements
Presentation
•
Chemistry
•
12th Grade
•
Practice Problem
•
Hard
Rosy Cedric
Used 16+ times
FREE Resource
9 Slides • 14 Questions
1
s block elements
2
LO
Analyse the properties of hydroxides and halides of alkali metals
3
HYDROXIDES
All the alkali metals, their oxides, peroxides and superoxides readily dissolve in water to produce corresponding hydroxides which are strong alkalies
4
Multiple Select
Which of the following is a peroxide
Na2O2
Na2O
5
Fill in the Blanks
Predict and write the chemical the equation for the reaction of sodium peroxide with water
Type answer...
6
Multiple Select
Which of the following is a superoxide
Na2O
Na2O2
K2O
KO2
7
Fill in the Blanks
Predict and write the chemical equation for the reaction of KO2 with water
Type answer...
8
Basic strength of the hydroxides
The basic strength of these hydroxides increases as we move down the group Li to Cs.
Alkali metals hydroxides being strongly basic react with all acids forming salts.
9
Fill in the Blanks
Write the equation for the reaction of LIOH with nitric acid
Type answer...
10
Thermal stability of group 1 hydroxides
All these hydroxides are highly soluble in water and thermally stable except lithium hydroxide
11
Fill in the Blanks
Predict the products formed when lithium hydroxide decomposes
Type answer...
12
Multiple Select
Reason for the anomalous behaviour of lithium hydroxide
large radii of lithium ion
high polarising power of lithium ion
low ionisation enthalpy
13
Multiple Choice
A
A
B
C
D
14
Multiple Choice
A
B
C
D
15
LO
ANALYSE THE PROPERTIES OF HALIDES OF ALKALI METALS
16
FORMATION OF HALIDES
ALKALI METALS REACT WITH HALOGENS TO FORM HALIDES
17
Multiple Choice
LITHIUM HALIDE IS MORE
COVALENT IN NATURE
IONIC IN NATURE
18
Multiple Choice
COVALENT NATURE OF LITHIUM ION IS DUE TO ITS
LARGE RADIUS
HIGH POLARISING POWER
19
REASON FOR THE COVALENT CHARACTER OF LITHIUM
The lithium ion is small in size and has the tendancy todistort the electron cloud of the negative halide ion
20
Multiple Select
Which of the lithium halides is more covalent more covalent
LiF
LiCl
LiBr
LiI
21
Open Ended
Reason for the high covalent character of lithium iodide
22
Multiple Select
Alkali metals are good
oxidising agents
reducing agents
23
The alkali metals dissolve in liquid ammonia giving deep blue solutions which are conducting in nature.
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