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प्रश्न
Elements A, B and C have atomic number 17, 19 and 10 respectively.
State which one is chemically inert.
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उत्तर
Electronic configuration of element A = (2, 8) at atomic no. 10
∴ Element C having 8 electrons in outer most orbit is chemically inert.
संबंधित प्रश्न
Define a chemical bond.
Five atoms are labelled from A to E.
| Atoms | Mass No. | Atomic No. |
| A | 40 | 20 |
| B | 19 | 9 |
| C | 7 | 3 |
| D | 16 | 8 |
| E | 14 | 7 |
(a) Which one of these atoms:
(i) contains 7 protons,
(ii) has an electronic configuration 2, 7?
(b) Write down the formula of the compound formed between C and D.
(c) predict which are: (i) metals, (ii) non-metals?
What type of bond is formed between two atoms, when the electronegative difference between them is zero?
Why do `""_17^35"CI"` and `""_17^37"CI"` have the same chemical properties? In what respect do these atoms differ?
Name the following:
An element having valency 'zero'
Name the following:
Two atoms having the same number of protons and electrons but different number of neutrons.
Draw orbit structure diagram of calcium oxide (CaO).
Draw the geometric atomic structure of the following atom showing the number of electrons, protons and neutrons in them:
\[\ce{^23_11Na}\]
The element that would form anion by gaining electrons in a chemical reaction is ______.
How many atoms of each kind are present in the following molecule:
carbon tetrachloride
