Question

Which of these statement is true?

(a) Alpha particles are neutral helium atoms.
(b) Alpha particles are negatively charged helium atoms
(c) Alpha particles are not helium ions
(d) Alpha particles are positively charged helium atoms.

Answer 1

Required Answer:-

Alpha particles have +2 charge (positively charged particle) and 4 units of mass which means mass of 2 protons and 2 neutrons inside the nucleus.

Case of a Helium atom:

• In a helium atom, there are 2 protons and 2 neutrons inside the nucleus.
• If we remove two electrons from the atom, it will positively charged (+2) and this is similar to alpha particle$.$
• And an alpha particle has no electrons to balance the positive charge of the two protons.

Hence:

• Alpha particles are positively charged helium atoms (Option D).

Answer 2

Answer:

➭ Which of these statement is true ?

• (a) Alpha particles are neutral helium atoms.
• (b) Alpha particles are negatively charged helium atoms.
• (c) Alpha particles are not helium ions.
• (d) Alpha particles are positively charged helium atoms.

Answers :-

The true statement is :

(d) Alpha particles are positively charged helium atoms.

Extra Shots :

➻ Helium is a colourless, odourless gas that is totally unreactive.

➻ Helium is used as a cooling medium for the Large Hadron Collider (LCH).

➻ Helium has no known biological role and it is non-toxic.

➻ Helium is a noble gases.