list all the elements in group 1a 11a and period 3 in order of their increasing atomic number

Answer 1

Group 1A (1)

1. Hydrogen (H)
2. Lithium (Li)
3. Sodium (Na)
4. Potassium (K)
5. Rubidium (Rb)
6. Cesium (Cs)
7. Francium (Fr)

Group 11A (11)

1. Copper (Cu)
2. Silver (Ag)
3. Gold (Au)

Period 3

1. Sodium (Na)
2. Magnesium (Mg)
3. Aluminum (Al)
4. Silicon (Si)
5. Phosphorus (P)
6. Sulfur (S)
7. Chlorine (Cl)
8. Argon (Ar)