Atomic Structure

Question 1

What is an atom?

Answer 1

An atom is the smallest component of an element that can exist and still have the same chemical properties as the element

Question 2

What is atomic number?

Answer 2

Atomic number is the number of protons in the nucleus of one atom of an element

Question 3

What is mass number?

Answer 3

Mass number is the total number of protons and neutrons in the nucleus of one atom of an element

Question 4

What is an electrostatic force of attraction?

Answer 4

electrostatic force of attraction is the force that exists between two oppositely charged particles.

Question 5

What is electronic configuration?

Answer 5

The electronic configuration of an atom is the arrangement of electrons in the energy shell of the atom

Question 6

What are isotopes?

Answer 6

Isotopes are different atoms of the same element that have the same number of protons and electrons but different numbers of neutrons

Question 7

What is isotopy?

Answer 7

isotopy is the occurence of atoms of the same element that have the same number of protons and electrons but different numbers of neutrons.

Question 8

Define relative atomic mass. Ar

Answer 8

Relative atomic mass is the average mass of one atom of an element compared to one-twelfth the mass of an atom of carbon-12.

Question 9

What is a radioactive isotope?

Answer 9

Isotopes with unstable nuclei is known as radioactive isotopes.