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प्रश्न
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 __________.
पर्याय
+2
−2
−1
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उत्तर
An element ‘X has six electrons in its outer or valence shell. Its valency is −2.
APPEARS IN
संबंधित प्रश्न
Mention briefly the salient features of Dalton’s atomic theory (five points)
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.
Name the negatively charged particle present in the atoms of all the elements.
Why is an atom neutral inspite of the presence of charged particles in it?
State the location of electrons, protons and neutrons in an atom.
Name the sub-atomic particle whose charge is 0.
State its one drawback of Rutherford’s atomic model.
Define the term Nucleons.
Define the term Valence shell.
State how electrons are distributed in an atom. Explain in brief the rules which govern their distribution.
