The lightest positive rays obtained is from:
Correct answer: A. Hydrogen gas
- A. Hydrogen gas
- B. Helium
- C. Neon
- D. Air
Explanation
The positive particle obtained from hydrogen is the lightest among all the other positive particles and is called a proton having mass 1836 times greater than that of an electron.Options B and C are wrong because these gases are not charged, they are inert.Air is a mixture of many gases with nitrogen and oxygen being most of it and both these are negatively charged and heavy.
Last updated
About Discovery of the Proton
The discovery of the proton follows the study of positive rays, also called canal rays, observed in discharge tubes and later identified as positively charged particles. The work of Goldstein and Rutherford is linked to the proton's charge, relative mass and role in the nuclear model, distinct from the discovery of the electron.
Practise Atomic Structure
922 free Atomic Structure MCQs from Chemistry, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Chemistry questions like this
Chemistry is on 12 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
Related questions
A helium nucleus comprising of two protons and two neutrons with a charge of 2e is _________ ?
According to Millikan's oil drop experiment, the charge on an oil droplet is:
Alpha (α) particles are helium (He) nucleus with a charge of __________ ?
Alpha particles can be detected by using___________?
Angle of deflection was studied by________________?