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Question
Fill in the blank
The outermost shell of an atom is known as............................
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Solution
The outermost shell of an atom is known as valence shell.
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Protons and neutrons present in the nucleus.
Multiple Choice Questions
The outermost shell of an atom is known as
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Which of the following scientists observed that cathode rays consists of negatively charged particles?
- John Dalton
- J J Thomson
- James Chadwick
- Democritus
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β-particles are actually a stream of
- protons
- electrons
- neutrons
- none of these
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What is an atom?
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Name the three subatomic particles. How are they different from each other ?
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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.
Define the term Mass number.
Define the term Valence shell.
