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Worksheetsperiodic table
Total questions: 20
Worksheet time: 11mins
alkali metals are kept in ........
IIA
IIIA
IA
0
Number of valence electrons in halogens is ..........
1
4
3
7
which group has the strong electronegative character
alkali metal
lanthanides
inert gases
halogens
Sulphur is........
Non metal
Metal
Metalloid
Inert gases
choose the wrong statement
Na is more active than Li
O is more active than S
Mg is more active than Al
Cl is more active than F
What is the valency of Krypton
0
1
2
3
Fluorine is more active than chlorine because ...........
fluorine has valency 1 but chlorine has 2
atomic number of fluorine is less than chlorine
atomic size of fluorine is less than chlorine
atomic size of fluorine is more than chlorine
what happens when we move from top to bottom in group
valency decreases
atomic radius increases
atomic radius decreases
valence electrons increases
What group number are the halogens found?
18 (8A)
1
2
17 (7A)
Which element is found in group 2, period 6?
Oxygen (O)
Barium (Ba)
Selenium (Se)
Carbon (C)
Elements that have the same number of energy levels are said to be in the same ______.
group
period
family
classification
