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प्रश्न
Explain fractional atomic mass. What is the fractional mass of chlorine?
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उत्तर
Atomic masses of the isotopes of chlorine are 35 and 37. However, in any given sample of chlorine gas, the isotopes occur in the approximate ratio 3:1, 75% of Cl35 and 25% of Cl37. So, the relative atomic mass or atomic weight of chlorine is 35.5.
Fractional atomic mass of chlorine
At. Mass = `(3(35) + 1(37))/2 = (105 + 37)/2`
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संबंधित प्रश्न
Define a chemical bond.
Give electron dot diagram of the following:
methane
Five atoms are labeled A to E
|
Atoms |
Mass No |
Atomic No. |
|
A |
40 |
20 |
|
B |
19 |
9 |
|
C |
7 |
3 |
|
D |
16 |
8 |
|
E |
14 |
7 |
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(i) contains 7 protons
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(c) Predict : (i) metals (ii) non-metals
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\[\ce{^39_19K}\]
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| 2. | Atoms with different electronegativities | b. | acceptor bond |
| 3. | An atom that accepts electron pair | c. | covalent bond |
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| f. | ionic bond |
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| a. | Sodium chloride | ______ |
| b. | ______ | co-ordinate covalent compound |
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