The e/m value is maximum for _ gas because of the _ value of "m" for positive rays obtained from it.
Correct answer: C. Hydrogen gas, lowest
- A. Oxygen gas, lowest
- B. Hydrogen gas, highest
- C. Hydrogen gas, lowest
- D. Helium gas, highest
Explanation
The elemnt with smallest mass will have the maximum e/m value.Option A: mass of oxygen gas is 32amuOption B: mass of hydrogen gas is 2amu [approximately]. So e/m value of hydrogen gas is maximum as its mass is lowest,Option D: mass of helium is 4 amu.
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