1. Francium
2. Calcium
3. Magnesium
4. Potassium
Calcium
1. Li+
2. Na+
3. K+
4. Cs+
Cs+
1. NaHCO3
2. Na2CO3
3. NaCl
4. NH4Cl
Na2CO3
1. Oxide
2. Peroxide
3. Superoxide
4. Epoxide
Peroxide
1. LiOH
2. KOH
3. NaOH
4. Mg(OH)2
LiOH
1. Na2CO3
2. NaHCO3
3. Na2O2
4. NaCl
NaCl
1. Na
2. Rb
3. K
4. Li
Li
1. 4
2. 1
3. 3
4. 2
4
1. 0.86g.cm-3
2. 0.95g.cm-3
3. 0.97g/cm3
4. 0.389g/cm3
0.86g.cm-3
1. Alkaline
2. Neutral
3. Acidic
4. Amphoteric
Alkaline