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Chemistry - 9 Chapter - 3
Atomic Structure
Test - 14
1.
Different isotopes show same physical properties.
a) True
b) False
2.
Atomic mass is written on the ______side of element symbol.
a) Upper right
b) Bottom left
c) Bottom right
d) Upper left
3.
Atomic number is written on the ________side of element symbol.
a) bottom right
b) Upper left
c) Bottom left
d) Upper right
4.
Naturally occurring Hydrogen has the largest percentage of _______ atoms present in it.
a) Tritium
b) Deutrium
c) Protium
5.
In Hydrogen amount of Deutrium is about __% whereas the number of tritium isotope is ______ in ten million.
a) 0.015, 3
b) 0.015, 1
c) 0.015, 2
d) 0.015, 4
6.
All the isotopes of Hydrogen have atomic number?
a) 1
b) 2
c) 4
d) 3
7.
All the isotopes of Hydrogen have atom mass number 1, 2, & 3.
a) False
b) True
8.
All the three isotopes of Hydrogen have ______ electrons.
a) 3
b) 1,2,3
c) 2
d) 1
9.
In Hydrogen Protium, Deutrium and tritium have ___ neutrons respectively.
a) 2, 1, 0
b) 1, 2, 3
c) 3, 2, 1
d) 1, 1, 2
10.
In isotopes of elements, only the number of neutrons change and proton and electron remain constant.
a) True
b) False
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