Question

match the element to the number of valence electrons. al choose ca choose f choose br choose b choose antimony choose potassium choose argon choose

Explanation:

Step1: Determine Al valence electrons

Al (aluminum) is in group 13 of the periodic table. Elements in group 13 have 3 valence electrons.

Step2: Determine Ca valence electrons

Ca (calcium) is in group 2 of the periodic table. Elements in group 2 have 2 valence electrons.

Step3: Determine F valence electrons

F (fluorine) is in group 17 of the periodic table. Elements in group 17 have 7 valence electrons.

Step4: Determine Br valence electrons

Br (bromine) is in group 17 of the periodic table. Elements in group 17 have 7 valence electrons.

Step5: Determine B valence electrons

B (boron) is in group 13 of the periodic table. Elements in group 13 have 3 valence electrons.

Step6: Determine Antimony (Sb) valence electrons

Antimony is in group 15 of the periodic table. Elements in group 15 have 5 valence electrons.

Step7: Determine potassium (K) valence electrons

Potassium is in group 1 of the periodic table. Elements in group 1 have 1 valence electron.

Step8: Determine argon (Ar) valence electrons

Argon is in group 18 of the periodic table. Elements in group 18 (noble - gases) have 8 valence electrons (except helium which has 2).

Answer:

Al - 3
Ca - 2
F - 7
Br - 7
B - 3
Antimony - 5
potassium - 1
argon - 8