Question

Which statement about subatomic particles is NOT true?

Answer 1

The statement that is not true about subatomic particles is Proton and neutrons have the same charge.

The other statements are true about sub-atomic particles;

• Protons and neutrons have almost the same mass.  
• Protons and electrons have opposite charges.  
• Unlike protons and electrons, neutrons have no charge.

Further Explanation

An atom  

• An atom is defined as the smallest particle of an element that can take part in a chemical reaction.
• Atoms are made of energy shells and the inner nucleus.

Subatomic particles

Protons

• Protons are subatomic particles that are found in the nucleus of an atom. They are positively charged. with a charge of +1.
• The number of protons differ from one element to another and thus used as the atomic number of an individual element.
• The nucleus of an atom is positively charged due to the positive charge of the protons.  
• Additionally, protons do not take part in chemical reactions but in nuclear reactions.

Neutrons  

• They are sub-atomic particles in an atom that are found in the nucleus of an atom. They have a zero charge or no charge.
• Neutrons are slightly heavier than protons.
• The number of protons and neutrons in a nucleus of an atom results to the atomic mass number of an atom. Like protons they only take part in nuclear reactions.

Electrons  

• They are found orbiting the nucleus on energy shells based on Clouds’ theory. Electrons are negatively charged each with a charge of -1.
• The number of electrons and protons in a neutral atom are equal. Additionally they have the least mass of the three sub-atomic particles.
• Electrons are the only sub-atomic particles that take part in chemical reactions.

Keywords: Atom, sub-atomic particles, electrons, protons, neutrons  

Learn more about:

• Sub-atomic particles: brainly.com/question/1264222
• Electrons: brainly.com/question/1264222
• Protons: brainly.com/question/1264222
• Neutrons: brainly.com/question/1264222

Level: High school

Subject: Chemistry

Topic: Atomic structure

Answer 2

The statement that is not true about subatomic particles is $\boxed{{\text{D}}{\text{. Protons and neutrons have the same charge}}{\text{.}}}$

Further Explanation:

The smallest particle that is the building block of matter is known as an atom. Most of the space in an atom is empty and its mass is concentrated inside a small region called the nucleus.

Protons, electrons, and neutrons are the three subatomic particles that are present in the atom. Protons and neutrons are collectively called nucleons because these are located in the nucleus of the atom. Electrons revolve around the nucleus in definite orbits.

The mass of the proton is $1.6726219 \times {10^{ - 27}}\;{\text{kg}}$  and the mass of the neutron is $1.674929 \times {10^{ - 27}}\;{\text{kg}}$  which is nearly equal to that of a proton. So statement A is true.

The positively charged subatomic particle is called proton. It is equal to the atomic number of the element. Electron is the negatively charged subatomic particle. In a neutral atom, the number of electrons is equal to the number of protons present in the nucleus of an atom. This implies that protons and electrons have opposite charges. So statement B is true.

As we know, protons are positively charged particles and electrons are negatively charged subatomic particles. But neutrons are neutral, having no charge. So statement C is true.

Protons carry a positive charge while neutrons have zero or no charge. This implies that protons and neutrons do not have the same charge. So statement D is not true.

Learn more:

1. The acidity of rainwater: brainly.com/question/1550328

2. Number of carbon atoms in 1.3-carat diamond: brainly.com/question/4235993

Answer details:

Grade: High School  

Subject: Chemistry  

Chapter: Structure of the atom

Keywords: subatomic particle, proton, electron, neutron, mass, positively charged, neutral, negatively charged, atomic number, mass number, no charge, building block, matter, atom, nucleus.