Element/lanthanides

Atomic Symbol	Element	Protons	Electrons	Neutrons	Atomic weight
	Lanthanum	57	57	81	139
				82
	Cerium	58	58	78	140
				80
				82
				83
				84
				86
	Praseodymium	59	59	82	141
	Neodymium	60	60	82	144
				83
				84
				85
				86
				88
				90
	Promethium	61	61	83	145
				84
	Samarium	62	62	82	150
				85
				86
				87
				88
				90
				92
	Europium	63	63	88	152
				90
	Gadolinium	64	64	88	157
				90
				91
				92
				93
				94
				96
	Terbium	65	65	94	159
	Dysprosium	66	66	90	163
				92
				94
				95
				96
				97
				98
	Holmium	67	67	98	165
	Erbium	68	68	94	167
				96
				98
				99
				100
				102
	Thulium	69	69	100	169
	Ytterbium	70	70	98	173
				99
				100
				101
				102
				103
				104
				106
	Lutetium	71	71	104	175
				105