Question

α-particle consists of.
(1) 2 protons and 2 neutrons only
(2) 2 electrons, 2 protons and 2 neutrons
(3) 2 electrons and 4 protons only
(4) 2 protons only

Answer 1

α-particle consists of 2 protons and 2 neutrons only

Step by step explanation:

• A Helium nucleus with two protons and two neutrons are called α-particle.

• The symbol of α-particle - $\bold{_{2}^{4}He}$

• α-particle has two positive charges.

• Beam of α-particles are called as α-rays or α-radiation.These are very high speed particles.

• These rays are strongly interact with matter.

Hence, correct option is 1.