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प्रश्न
Elements A, B and C have atomic number 17, 19 and 10 respectively.
State which one is a non-metal.
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उत्तर
Electronic configuration of element A = (2, 8, 7) at atomic no. 17
∴ Element A has 7 electrons in its outermost shell it is a non-metal.
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संबंधित प्रश्न
In term of electron transfer, define
Reduction
Match the column A with Column B.
|
Column A |
Column B |
|
(i) Sodium chloride (ii) Ammonium ion (iii) Carbon tetrachloride |
Covalent bond Ionic bond Covalent and coordinate bond |
State the following is a reduction reaction or oxidation reaction.
\[\ce{A^3+ + e- -> A^2+}\]
What do you understand by redox reactions?
Write down the electronic configuration of
(i) chlorine atom (ii) chlorine ion
Draw the geometric atomic structure of the following atom showing the number of electrons, protons and neutrons in them:
\[\ce{^23_11Na}\]
How do atoms attain Noble gas electronic configuration?
Why are Noble gases inert in nature?
Match the following:
| 1. | Monoatomic gaseous atom | a. | Electrovalent bond |
| 2. | Octet rule | b. | Benzene |
| 3. | Ionic bond | c. | Water |
| 4. | Non-polar solvent | d. | Electronic theory of valence |
| 5. | Polar solvent | e. | Noble gases |
Choose the odd one out and write the reason:
