Which among the following is a positively charged particle emitted by a radioactive element?
Detailed Explanation:
Alpha particles (α) are positively charged particles emitted during radioactive decay, consisting of 2 protons + 2 neutrons (essentially a helium nucleus).
Beta rays (β) are negatively charged electrons, while cathode rays are also streams of electrons, both carrying negative charge.
Therefore, Option 3 (Alpha ray) is the correct answer.
Question 3 of 8 Atomic Structure
Practice PYQ questions from this topic across all years
Who was the first one to propose a model for the structure of an atom?
Which of the following statements about diamond and graphite is true?