Atomic Structure Question Preview (ID: 3949)
Chemistry ACE.
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What is the relative mass for electron?
a) 1000
b) 1
c) 1/1000
d) 1/2000
Proton number also known as
a) mass number
b) atomic number
c)
d)
Copper has a mass number of 64, atomic number of 29. How many electron does Copper has?
a) 27
b) 28
c) 29
d) 64
Isotopes are atoms of the same element with the same numbers of ______ but different number of _______.
a) neutrons, protons
b) protons, neutrons
c) protons, electrons
d) neutrons, electrons
Chlorine has 2 isotopes, Chlorine-35 and Chlorine-37. The relative atomic mass of Chlorine is given to be 35.5. Calculate the relative abundance of Chlorine-37.
a) 25
b) 26
c) 27
d)
Isotopes will have same _______ properties but different ________ properties.
a) physical chemical
b) chemical physical
c)
d)
What are the names of 4 sub shells?
a) a b c d
b) x y z f
c) h m j k
d) s p d f
How many electrons can principal quantum shell, 2p contain?
a) 4
b) 5
c) 6
d) 7
As the principal quantum number, n. increases, the energy gap between successive shells gets _____
a) bigger
b) smaller
c)
d)
Atoms with the same number of valence electrons will have the same _______ properties.
a) chemical
b) physical
c) biological
d)
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