Atomic Structure: Question Preview (ID: 3949)

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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

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

Isotopes will have same _______ properties but different ________ properties.
a) physical chemical
b) chemical physical

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

Atoms with the same number of valence electrons will have the same _______ properties.
a) chemical
b) physical
c) biological

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