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प्रश्न
Write true or false for the following statement
The maximum number of electrons in the first shell can be 8.
विकल्प
True
False
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उत्तर
false
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संबंधित प्रश्न
Multiple Choice Questions
number of valence electrons present in magnesium is
What are the observations of the experiment done by Rutherford in order to determine the structure of an atom?
What are the two main parts of which an atom is made of?
Tick the most appropriate answer.
In 1908, R A Millikan found the charge of an electron to be
- 1.6 x 10-19 C
- 1.6 x 10-15 C
- 1.4 x 10-19 C
- 1.6 x 19-16 C.
WRITE SHORT ANSWER
What is the number of neutrons present in a potassium atom ?
State whether the following statement is true or false :
The anode rays obtained from all the gases consist of positively charged particles called protons.
Compare a proton and a neutron in respect of mass and charge.
Which of the following statement is always correct?
With reference to the discovery of the structure of an atom, explain in brief – William Crookes experiment for the discovery of cathode rays, followed by – J.J. Thomsons experiment pertaining to the constituents of the cathode rays. State which sub-atomic particle was discovered from his experiment.
Select the correct answer from the choice in the bracket to complete the sentence:
An element ‘X’ has six electrons in its outer or valence shell. Its valency is __________.
