Which two elements have similar properties?
Hydrogen (H) and
Oxygen (O)
Rubidium (Rb) and
Fluorine (F)
Sodium (Na) and
Chlorine (CI)
Cesium (Cs) and
Potassium (K)
Hydrogen (H) and
Oxygen (O)
Rubidium (Rb) and
Fluorine (F)
Sodium (Na) and
Chlorine (CI)
Cesium (Cs) and
Potassium (K)