Elements from the s-block, alkali and alkali-earth metals.
“Beryllium is the chemical element with the symbol Be and atomic number 4. Beryllium is more...Beryllium
“Caesium or cesium is an alkali metal with the chemical symbol Cs and atomic number 55. It is the...Caesium
“Potassium is a silvery white alkali metal which has limited applications in the home lab due to...Potassium