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प्रश्न
Fill in the blank
Neutrons are .......................... particles having mass equal to that of protons.
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उत्तर
Neutrons are neutral particles having mass equal to that of protons.
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संबंधित प्रश्न
Fill in the blank
The outermost shell of an atom is known as............................
Multiple Choice Questions
number of valence electrons present in magnesium is
FILL IN THE BLANK
The electrons revolving in shells close to the nucleus are called ................... electrons.
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.
ANSWER IN DETAIL
What is the maximum number of electrons that L shell can accommodate ? Give reasons for your answer.
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 an electron and a proton in respect of mass and charge.
State the location of electrons, protons and neutrons in an atom.
Explain how the modern atomic theory contradicted Dalton’s atomic theory.
What is meant by the term subatomic particles?
