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प्रश्न
Multiple Choice Questions
number of valence electrons present in magnesium is
पर्याय
two
three
four
five
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उत्तर
two
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संबंधित प्रश्न
Give the following a suitable word/phrase
The sub-atomic particle with negative charge and negligible mass.
Give the following a suitable word/phrase
Arrangement of electrons in the shells of an atom.
Tick the most appropriate answer.
How many times is a proton heavier than an electron?
- 1500
- 1800
- 1840
- none of these
WRITE SHORT ANSWER
What is the charge on a neutron ?
ANSWER IN DETAIL
Name the three subatomic particles. How are they different from each other ?
Draw the electronic configuration of the following elements clearly stating the number of neutrons and protons in their nucleus.
a. Beryllium b. Silicon
c. Chlorine d. Aluminium
e. Nitrogen
State whether the following statement is true or false :
The anode rays obtained from all the gases consist of positively charged particles called protons.
State the location of electrons, protons and neutrons in an atom.
Explain how the modern atomic theory contradicted Dalton’s atomic theory.
State how electrons are distributed in an atom. Explain in brief the rules which govern their distribution.
