list all the elements in group 1a 11a and period 3 in order of their increasing atomic number
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)
Group 1A (also known as Group 1 or the alkali metals) consists of the following elements in increasing atomic number:
1. Hydrogen (H) - atomic number 1
2. Lithium (Li) - atomic number 3
3. Sodium (Na) - atomic number 11
4. Potassium (K) - atomic number 19
5. Rubidium (Rb) - atomic number 37
6. Cesium (Cs) - atomic number 55
7. Francium (Fr) - atomic number 87
Group 11A (also known as Group 11 or the coinage metals) consists of the following elements in increasing atomic number:
1. Copper (Cu) - atomic number 29
2. Silver (Ag) - atomic number 47
3. Gold (Au) - atomic number 79
Period 3 consists of the following elements in increasing atomic number:
1. Sodium (Na) - atomic number 11 (also present in Group 1A)
2. Magnesium (Mg) - atomic number 12
3. Aluminum (Al) - atomic number 13
4. Silicon (Si) - atomic number 14
5. Phosphorus (P) - atomic number 15
6. Sulfur (S) - atomic number 16
7. Chlorine (Cl) - atomic number 17
8. Argon (Ar) - atomic number 18
To answer your question, we need to identify the elements in Group 1A, 11A, and Period 3 of the periodic table and then arrange them in order of increasing atomic number.
Group 1A, also known as Group 1 or the alkali metals group, consists of the elements hydrogen (H), lithium (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs), and francium (Fr).
Group 11A, also known as Group 11 or the coinage metals group, consists of the elements copper (Cu), silver (Ag), and gold (Au).
Period 3 of the periodic table includes the elements sodium (Na), magnesium (Mg), aluminum (Al), silicon (Si), phosphorus (P), sulfur (S), chlorine (Cl), and argon (Ar).
Now we will arrange these elements in order of increasing atomic number:
1. Hydrogen (H) - Atomic number 1
2. Helium (He) - Noble gas (not in any specific group)
3. Lithium (Li) - Group 1A, Atomic number 3
4. Beryllium (Be) - Group 2A, Atomic number 4
5. Boron (B) - Group 3A, Atomic number 5
6. Carbon (C) - Group 4A, Atomic number 6
7. Nitrogen (N) - Group 5A, Atomic number 7
8. Oxygen (O) - Group 6A, Atomic number 8
9. Fluorine (F) - Group 7A, Atomic number 9
10. Neon (Ne) - Noble gas (not in any specific group)
11. Sodium (Na) - Group 1A, Atomic number 11
12. Magnesium (Mg) - Group 2A, Atomic number 12
13. Aluminum (Al) - Group 13A, Atomic number 13
14. Silicon (Si) - Group 14A, Atomic number 14
15. Phosphorus (P) - Group 15A, Atomic number 15
16. Sulfur (S) - Group 16A, Atomic number 16
17. Chlorine (Cl) - Group 17A, Atomic number 17
18. Argon (Ar) - Noble gas (not in any specific group)
19. Potassium (K) - Group 1A, Atomic number 19
20. Calcium (Ca) - Group 2A, Atomic number 20
21. Copper (Cu) - Group 11A, Atomic number 29
22. Rubidium (Rb) - Group 1A, Atomic number 37
23. Silver (Ag) - Group 11A, Atomic number 47
24. Cesium (Cs) - Group 1A, Atomic number 55
25. Gold (Au) - Group 11A, Atomic number 79
26. Francium (Fr) - Group 1A, Atomic number 87
So, the elements in Group 1A, 11A, and Period 3 in order of increasing atomic number are:
H, He, Li, Be, B, C, N, O, F, Ne, Na, Mg, Al, Si, P, S, Cl, Ar, K, Ca, Cu, Rb, Ag, Cs, Au, Fr.