Atomic structure, electricity and magnetism

Question 1

How do the nucleus of atoms remain stable despite the repulsion forces between the positively charged protons?

Answer 1

Strong nuclear force is present within the nucleus holding the nucleons together.

Question 2

What letter represents the innermost shell of an atom?

Answer 2

K

Question 3

What can the outermost shell of an atom also be known as?

Answer 3

Valence shell

Question 4

How is energy distributed across electrons in the electron shells?

Answer 4

Electrons in the innermost shells have the greatest energy, this decreases as the shells get further away from the nucleus

Question 5

What is the force of attraction called between the electrons and the nucleus?

Answer 5

Binding energy

Question 6

Define a nuclide

Answer 6

Another name for an atom

Question 7

Define a radionuclide

Answer 7

radioactive atom

Question 8

Isotope

Answer 8

Elements with the same atomic number (proton number) but different mass number (neutrons)

Question 9

What is an atom

Answer 9

Smallest part of a chemical element that can exist

Question 10

what is a nucleon?

Answer 10

proton or a neutron