Related Questions

A free electron is a valence electron that has broken away from its parent atom.
A True
B False
As an atom absorbs energy, ........ increases and the atom is said to be excited.
A as its energy level
B it is energy level
C the energy level of it
D the energy level
As an atom absorbs energy , ................. increases, and the atom is said to be excited .
A its energy level
B as its energy level
C it is energy level
D the energy level of its
As an atom absorbs energy,_____ increases, and the atom is said to be excitef
A its energy level
B as its energy level
C it is energy level
D the energy level of its
The oxygen atom is ________ times heavier than the hydrogen atom.
A 2
B 8
C 16
D 32
If the size of the nucleus of an atom is compared with a cricket ball, then the radius of the atom is approximately equal to how many kilometres?
A 0.5
B 0.005
C 0.05
D 5
The total energy of revolving electron in an atom
A Cannot be negative
B Can have any value above zero
C Can never be positive
D Will always be positive
The valence electron of a copper atom experiences what kind of attraction toward the nucleus?
A Strong
B Neutral
C Weak
D Impossible to say
E None of the above
বোরের স্বীকার্য অনুসারে হাইড্রোজেন পরমাণুর প্রথম কক্ষপথে ইলেকট্রনের কৌণিক ভরবেগ (According to Bohr's hypothesis, the angular momentum of electron in the 1st orbit of hydrogen atom is)
A h/2
B h/π
C h/2π
D h/4π
Na পরমাণুর 11th ইলেকট্রনের গতিবেগ কত হবে?(What will be the velocity of 11th electron of Na atom?)
A 231.52 × 105 cm/sec
B 309.11×105cm/sec
C 617.55×106cm/sec
D 801.95×106cm/sec
E 912.20×106cm/sec

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