Question

The alpha particles are:

• A. high energy electrons
• B. positively charged hydrogen ions
• C. high energy $X$-ray radiations
• D. double positively charged helium nuclei

Answer 1

The correct option is D double positively charged helium nuclei

$\bullet$ high energy electrons $\to \beta$-particle

$\bullet$ positively charged hydrogen ions $\to$Protons(p).

$\bullet$ double positively charged helium nuclei $\to$$\alpha$-particle

$\bullet$ Nature of X-ray radiations is unknown.

But, X-rays are a type of electromagnetic wave.