Topic 11: Atomic Structure

Question 1

Relative mass of Proton Neutron and Electron?

Answer 1

Proton = 1
Neutron = 1
Electron = 1/2000

Question 2

Charge of Proton Neutron and Electron?

Answer 2

Proton = +1
Neutron = 0
Electron = -1

Question 3

What is the Mass Number?

Answer 3

This is normally displayed at the top of the element and is the total number of protons and neutrons.

Question 4

What is the Atomic Number?

Answer 4

This is normally displayed at the bottom of the element and is the number of protons (the amount of positive charge).

Question 5

How to get the number of neutrons?

Answer 5

Just subtract the atomic number from the mass number.

Question 6

Number of electrons =

Answer 6

Number of protons.

Question 7

What is the relative atomic mass?

Answer 7

The relative atomic mass is a measure of the mass of one atom of the element.

Question 8

What is a isotope?

Answer 8

Different atomic forms of the same element, which have the same number of protons but a different number of neutrons.

Question 9

Draw electronic configuration of nitrogen,
group = 5
period = 2

Answer 9

electrons = 5 in 2 shells.

Question 10

name of the gas that makes up 0.96% of the air?

Answer 10

Argon.