Question

match the following atoms with its number of valence electrons. potassium carbon magnesium oxygen

Explanation:

Step1: Recall potassium's group

Potassium is in Group 1. Elements in Group 1 have 1 valence - electron.

Step2: Recall carbon's group

Carbon is in Group 14. Elements in Group 14 have 4 valence - electrons.

Step3: Recall magnesium's group

Magnesium is in Group 2. Elements in Group 2 have 2 valence - electrons.

Step4: Recall oxygen's group

Oxygen is in Group 16. Elements in Group 16 have 6 valence - electrons.

Answer:

potassium - 1
carbon - 4
magnesium - 2
oxygen - 6