Related Questions

A free electron is a valence electron that has broken away from its parent atom.
A True
B False
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 nucleus of the copper atom contains how many protons?
A 1
B 4
C 18
D 29
E None of the above
The door of my house is toward east. From the backside of my house I drove straight 100 meters. Then turned right and drove for 100 meters and then turned toward left and drove 50 meters and reached my destination. In which direction am I from the starting point?
A North-west
B South-west
C East
D West
How may valence electrons does a silicon atom have?
A 0
B 1
C 2
D 4
E None of the above
If 2 kg of metal, of which 1/3 is zine and the rest is copper , be mixed with 3 kg of metal, of which 1/4 is zinc and the rest is copper , then what will be the ratio of zinc to copper in the mixture?
A 17 : 43
B 13 : 42
C 19 : 43
D 15 : 42
If 2 kg of metal, of which 1/3 is zinc and the rest is copper s, be mixed with 3 kg of metal , of which 1/4 is zinc and the rest is copper , then what will be the ratio of zinc to copper in the mixture?
A 13 : 42
B 19 : 43
C 15 : 42
D 17 : 43
স্বাভাবিক অবস্থায় ফ্লোরিনের যোজ্যতা ইলেক্ট্রন (valence electron ) কয়টি?
A 5
B 9
C 1
D 2
The current due to electron flow in conduction band is the hole current in valence band.
A Equal to
B Less than
C Greater than
D Any of the above
The nucleus of an atom consists of
A electrons and neutrons
B electrons and protons
C protons and neutrons
D All of the above

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