Related Questions

How many protons does the nucleus of a silicon atom contain?
A 4
B 29
C 14
D 48
E None of the above
The number of protons in a copper atom are
A 2
B 9
C 11
D 29
A neutral atom is one with an equal number of protons and electrons.
A True
B False
The nucleus of the copper atom contains how many protons?
A 1
B 4
C 18
D 29
E None of the above
An SCR is made of silicon and not germanium because silicon
A Is inexpensive
B Is mechanically strong
C Has small leakage current
D Is tetravalent
Silicon percentage in silicon steel used for electrical equipments is about
A 1
B 4.0
C 8
D 14
Silicon percentage in the silicon steel used for electrical appliances/equipments is
A 0.3-0.4
B 12-14
C 3-4
D 20-25
How may valence electrons does a silicon atom have?
A 0
B 1
C 2
D 4
E None of the above
Atoms having the same number of protons but different number of neutrons are called :
A Isotopes
B Cations
C Higgs-boson
D Anions
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

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