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Atomic Structure and Sub-atomic Particles Quiz

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Atomic Structure and Sub-atomic Particles Quiz

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Questions and Answers

Which sub-atomic particle has the smallest mass compared to the others?

Neutron

Orbital

Electron (correct)

Proton

Why will a proton be deflected towards the negative plate in an electric field?

Because it is negatively charged

Because it is lighter than an electron

Because it is positively charged (correct)

Because it is neutral

What is the main reason electrons do not move in fixed orbits around the nucleus?

Due to the absence of orbitals

Because of their small mass and wave-like nature (correct)

Because of their neutral charge

Due to their mass being too large

In an electric field, which sub-atomic particle will not be deflected?

Neutron Signup and view all the answers

Why does the electron experience a greater angle of deflection than the proton in an electric field?

Because electrons are lighter than protons Signup and view all the answers

What conclusion can be drawn from the behavior of sub-atomic particles in an electric field?

Protons are positively-charged, electrons are negatively-charged, neutrons are neutral Signup and view all the answers

What is the difference between proton number and nucleon number?

Proton number is the total number of protons in an atom, while nucleon number is the total number of protons and neutrons in an atom. Signup and view all the answers

What is the relationship between the number of protons and electrons in a neutral atom?

The number of protons and electrons is always the same. Signup and view all the answers

What is the difference between a cation and an anion?

A cation is a positively charged ion formed when an atom loses electrons, while an anion is a negatively charged ion formed when an atom gains electrons. Signup and view all the answers

What is the main difference between isotopes of the same element?

They have different numbers of neutrons. Signup and view all the answers

What is the purpose of using the carbon-12 scale for relative atomic mass?

It is the most abundant isotope of carbon, making it a convenient standard. Signup and view all the answers

How is the relative atomic mass of an element calculated?

It is the weighted average of the relative masses of all the element's isotopes. Signup and view all the answers