State the particles for each of the following substance. Write an atom, molecule or ion in the space provided.

example: ion, atom

• A

• B

• C

• D

• A

• B

• C

• D

State two elements that in the same group

Example : O and Cl

• A

• B

• C

• D

example : 2.6, 2.8.5

• A

• B

• C

• D

Element R has isotopes with nucleon number 13, what is the neutron number of that isotopes?

• A

• B

• C

• D

Example : Cobalt-60