Respuesta :
Answer: Hydrogen
Sodium Magnesium Aluminium
Potassium Calcium Gallium
Rubidium Strontium Indium
Caesium Barium Thallium
Explanation:

Answer: Hydrogen
Sodium Magnesium Aluminium
Potassium Calcium Gallium
Rubidium Strontium Indium
Caesium Barium Thallium
Explanation: