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प्रश्न
Fill in the blank
The outermost shell of an atom is known as............................
उत्तर
The outermost shell of an atom is known as valence shell.
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संबंधित प्रश्न
Multiple Choice Questions
number of valence electrons present in magnesium is
Define the term Atomic number.
FILL IN THE BLANK
Gases become good conductors of electricity under ........ (low/high) pressure and .............. (low/high) voltage electrical discharge.
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.
Tick the most appropriate answer
β-particles are actually a stream of
- protons
- electrons
- neutrons
- none of these
TRUE \ FALSE
Electrons are present in the nucleus.
ANSWER IN DETAIL
Name the three subatomic particles. How are they different from each other ?
State the location of electrons, protons and neutrons in an atom.
Explain in brief – Goldstein’s experiment which led to the discovery of the proton.
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 __________.
