C1.1 Atomic Structure

Question 1

What is the largest amount of electrons you can have in each outer shell?

Answer 1

2 in first shell

8 in second and third shells

Question 2

What is the arrangement of electrons in Mg?

Answer 2

2,8,2

Question 3

What is the nucleus of an atom?

Answer 3

The centre of the atom which contains protons and neutrons

Question 4

How do you calculate the mass of an atom?

Answer 4

The mass number of an atom is the larger number in the periodic table

Question 5

Which subatomic particle is positive?

Answer 5

Proton

Question 6

What does the number of electrons in the outer shell tell you about an element?

Answer 6

The group it is in.

Question 7

How many protons, neutrons and electrons does carbon-12 have?

Answer 7

6 protons, 6 neutrons and 6 electrons

Question 8

What is the charge on a neutron?

Answer 8

0

Question 9

What is the charge of an electron?

Answer 9

-1

Question 10

Why are the noble gases unreactive?

Answer 10

They have a full outer shell of electrons.

Question 11

What does the atomic number tell you?

Answer 11

The number of protons in an atom

Question 12

How do you calculate the number of electrons in atom of an element?

Answer 12

The number of electrons are the same as the number of protons which you work out from the atomic number.