Question

1. draw diagrams: create an electron dot diagram for each of the elements below. use the gizmo to help you do this. to check your work, turn on show electron dot diagram. h he li be b c n o f ne na mg al si p s cl ar

Explanation:

Step1: Recall electron - dot diagram rules

Electron - dot diagrams show the valence electrons of an atom as dots around the symbol of the element. The number of valence electrons is determined by the group number in the periodic table (for main - group elements).

Step2: Determine valence electrons for H

Hydrogen (H) is in Group 1, so it has 1 valence electron. Electron - dot diagram: H•

Step3: Determine valence electrons for He

Helium (He) is in Group 18. It has 2 valence electrons. Electron - dot diagram: :He:

Step4: Determine valence electrons for Li

Lithium (Li) is in Group 1, so it has 1 valence electron. Electron - dot diagram: Li•

Step5: Determine valence electrons for Be

Beryllium (Be) is in Group 2, so it has 2 valence electrons. Electron - dot diagram: :Be:

Step6: Determine valence electrons for B

Boron (B) is in Group 13, so it has 3 valence electrons. Electron - dot diagram: •B•

Step7: Determine valence electrons for C

Carbon (C) is in Group 14, so it has 4 valence electrons. Electron - dot diagram: •C•

Step8: Determine valence electrons for N

Nitrogen (N) is in Group 15, so it has 5 valence electrons. Electron - dot diagram: •N•

Step9: Determine valence electrons for O

Oxygen (O) is in Group 16, so it has 6 valence electrons. Electron - dot diagram: •O•

Step10: Determine valence electrons for F

Fluorine (F) is in Group 17, so it has 7 valence electrons. Electron - dot diagram: •F•

Step11: Determine valence electrons for Ne

Neon (Ne) is in Group 18, so it has 8 valence electrons. Electron - dot diagram: :Ne:

Step12: Determine valence electrons for Na

Sodium (Na) is in Group 1, so it has 1 valence electron. Electron - dot diagram: Na•

Step13: Determine valence electrons for Mg

Magnesium (Mg) is in Group 2, so it has 2 valence electrons. Electron - dot diagram: :Mg:

Step14: Determine valence electrons for Al

Aluminum (Al) is in Group 13, so it has 3 valence electrons. Electron - dot diagram: •Al•

Step15: Determine valence electrons for Si

Silicon (Si) is in Group 14, so it has 4 valence electrons. Electron - dot diagram: •Si•

Step16: Determine valence electrons for P

Phosphorus (P) is in Group 15, so it has 5 valence electrons. Electron - dot diagram: •P•

Step17: Determine valence electrons for S

Sulfur (S) is in Group 16, so it has 6 valence electrons. Electron - dot diagram: •S•

Step18: Determine valence electrons for Cl

Chlorine (Cl) is in Group 17, so it has 7 valence electrons. Electron - dot diagram: •Cl•

Step19: Determine valence electrons for Ar

Argon (Ar) is in Group 18, so it has 8 valence electrons. Electron - dot diagram: :Ar:

Answer:

H•, :He:, Li•, :Be:, •B•, •C•, •N•, •O•, •F•, :Ne:, Na•, :Mg:, •Al•, •Si•, •P•, •S•, •Cl•, :Ar: