CBSE BoardEnglish MediumSTD 9ScienceStructure of the Atom1 Mark
Question
$\alpha-$Particles are positively charged.
✓
Answer
True. Explanation: An The alpha particle is a helium nucleus; it consists of two protons and two neutrons. It contains no electrons to balance the two positively charged protons. Alpha particles are therefore positively charged particles moving at high speeds. Beta particles are emitted by neutron rich unstable nuclei.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.