Element/alkali

Atomic Symbol	Element	Protons	Electrons	Neutrons	Atomic weight
	Lithium	3	3	3	7
				4
	Sodium	11	11	11	23
				12
				13
	Potassium	19	19	20	39
				21
				22
				23
				24
	Rubidium	37	37	48	85
				49
				50
	Cesium	55	55	74	133
				78
				79
				81
				82
	Francium	87	87	136	223