3.2 Atomic structure

Question 1

What are the three subatomic particles that an atom contains?

Answer 1

proton
neutron
electron

Question 2

How is an atom neutrally charged?

Answer 2

same number of protons and electrons
charge cancels out

Question 3

What is the relative mass of a proton?

Answer 3

1

Question 4

What is the relative mass of a neutron?

Answer 4

1

Question 5

What is the relative mass of an electron?

Answer 5

0.001

Question 6

What is the relative charge of a proton?

Answer 6

+1

Question 7

What is the relative charge of a neutron?

Answer 7

0

Question 8

What is the relative charge of an electron?

Answer 8

-1

Question 9

Where are protons and neutrons found?

Answer 9

in the nucleus

Question 10

Where are electrons found?

Answer 10

energy shells/levels around the nucleus

Question 11

What is the atomic number?

Answer 11

number of protons

Question 12

What is the mass number?

Answer 12

number of protons and neutrons

Question 13

Define isotope

Answer 13

atom with same number of protons but different number of neutrons
therefore, different mass number

Question 14

Does an isotope behave differently to a normal atom?

Answer 14

no - same number of electrons

Question 15

What is the relative atomic mass?

Answer 15

average mass of an atom of an element, taking into account the different masses of each isotope

Question 16

What is the formula for relative atomic mass?

Answer 16

(abundance/100 x mass number) + (abundance/100 x mass number)

Question 17

What is the maximum electronic configuration?

Answer 17

2,8,18….

Question 18

How many electrons in the outer shell does an element in period 3 group 5 have?

Answer 18

5

Question 19

How many electron shells does an element in period 3 group 5 have?

Answer 19

3