Protons Neutrons & Electrons for All Elements

In the below table we list the number of protons, neutrons and electrons for each element in the periodic table.

Atomic Number	Symbol	Element	Protons	Neutrons	Electrons
1	H	Hydrogen	1	0	1
2	He	Helium	2	2	2
3	Li	Lithium	3	4	3
4	Be	Beryllium	4	5	4
5	B	Boron	5	6	5
6	C	Carbon	6	6	6
7	N	Nitrogen	7	7	7
8	O	Oxygen	8	8	8
9	F	Fluorine	9	10	9
10	Ne	Neon	10	10	10
11	Na	Sodium	11	12	11
12	Mg	Magnesium	12	12	12
13	Al	Aluminium	13	14	13
14	Si	Silicon	14	14	14
15	P	Phosphorus	15	16	15
16	S	Sulfur	16	16	16
17	Cl	Chlorine	17	18	17
18	Ar	Argon	18	22	18
19	K	Potassium	19	20	19
20	Ca	Calcium	20	20	20
21	Sc	Scandium	21	24	21
22	Ti	Titanium	22	26	22
23	V	Vanadium	23	28	23
24	Cr	Chromium	24	28	24
25	Mn	Manganese	25	30	25
26	Fe	Iron	26	30	26
27	Co	Cobalt	27	32	27
28	Ni	Nickel	28	31	28
29	Cu	Copper	29	35	29
30	Zn	Zinc	30	35	30
31	Ga	Gallium	31	39	31
32	Ge	Germanium	32	41	32
33	As	Arsenic	33	42	33
34	Se	Selenium	34	45	34
35	Br	Bromine	35	45	35
36	Kr	Krypton	36	48	36
37	Rb	Rubidium	37	48	37
38	Sr	Strontium	38	50	38
39	Y	Yttrium	39	50	39
40	Zr	Zirconium	40	51	40
41	Nb	Niobium	41	52	41
42	Mo	Molybdenum	42	54	42
43	Tc	Technetium	43	-141	43
44	Ru	Ruthenium	44	57	44
45	Rh	Rhodium	45	58	45
46	Pd	Palladium	46	60	46
47	Ag	Silver	47	61	47
48	Cd	Cadmium	48	64	48
49	In	Indium	49	66	49
50	Sn	Tin	50	69	50
51	Sb	Antimony	51	71	51
52	Te	Tellurium	52	76	52
53	I	Iodine	53	74	53
54	Xe	Xenon	54	77	54
55	Cs	Cesium	55	78	55
56	Ba	Barium	56	81	56
57	La	Lanthanum	57	82	57
58	Ce	Cerium	58	82	58
59	Pr	Praseodymiu	59	82	59
60	Nd	Neodymium	60	84	60
61	Pm	Promethium	61	84	61
62	Sm	Samarium	62	88	62
63	Eu	Europium	63	89	63
64	Gd	Gadolinium	64	93	64
65	Tb	Terbium	65	94	65
66	Dy	Dysprosium	66	97	66
67	Ho	Holmium	67	98	67
68	Er	Erbium	68	99	68
69	Tm	Thulium	69	100	69
70	Yb	Ytterbium	70	103	70
71	Lu	Lutetium	71	104	71
72	Hf	Hafnium	72	106	72
73	Ta	Tantalum	73	108	73
74	W	Tungsten	74	110	74
75	Re	Rhenium	75	111	75
76	Os	Osmium	76	114	76
77	Ir	Iridium	77	115	77
78	Pt	Platinum	78	117	78
79	Au	Gold	79	118	79
80	Hg	Mercury	80	121	80
81	Tl	Thallium	81	123	81
82	Pb	Lead	82	125	82
83	Bi	Bismuth	83	126	83
84	Po	Polonium	84	125	84
85	At	Astatine	85	125	85
86	Rn	Radon	86	136	86
87	Fr	Francium	87	136	87
88	Ra	Radium	88	138	88
89	Ac	Actinium	89	138	89
90	Th	Thorium	90	142	90
91	Pa	Protactinium	91	140	91
92	U	Uranium	92	146	92
93	Np	Neptunium	93	144	93
94	Pu	Plutonium	94	148	94
95	Am	Americium	95	148	95
96	Cm	Curium	96	151	96
97	Bk	Berkelium	97	150	97
98	Cf	Californium	98	153	98
99	Es	Einsteinium	99	153	99
100	Fm	Fermium	100	157	100
101	Md	Mendeleviu	101	157	101
102	No	Nobelium	102	148	102
103	Lr	Lawrencium	103	157	103
104	Rf	Rutherfordiu	104	157	104
105	Db	Dubnium	105	157	105
106	Sg	Seaborgium	106	157	106
107	Bh	Bohrium	107	155	107
108	Hs	Hassium	108	147	108
109	Mt	Meitnerium	109	147	109
110	Ds	Darmstadtiu	110	159	110
111	Rg	Roentgeniu	111	161	111
112	Cn	Copernicium	112	165	112

How to find the Atomic Number

The atomic number of an element is the number of protons in its nucleus. The most reliable method to determine the atomic number is to consult a periodic table; it’s in the upper left corner or has the highest value on the square.

Finding the Number of Protons

The atomic number of an element is equal to the number of protons in its atom. Using oxygen as our example, we can see that it has an atomic number of eight on the periodic table. This means that there are eight protons inside every atom of oxygen. Also, keep in mind that the number of protons cannot be altered for any element.

Finding the Number of Neutrons

The atomic number minus the atomic mass yields the number of neutrons in an atom. Both of these quantities may be found on the periodic table. The atomic number is shown above the element’s symbol, whereas the mass number is located below it. Let us continue to use oxygen as an example. Its atomic weight is 15.999 amu, and its atomic number is 8. When we subtract 8 from 15.999, we get 8.

It is important to know that the number of neutrons for each element can be different. This is because some elements have isotopes, which contain various numbers of neutrons in their atoms.

Finding the Number of Electrons

The atomic number of an element is the sum of its electrons, which is equal to the atom’s neutral charge. neutrally charged species The number of electrons and protons in an element are equal, so the amount of electrons in oxygen is also 8. Furthermore, because these two subatomic particles, electrons and protons, have opposite charges, they cancel each other out and maintain the atom neutral.

Summary

Number of Protons = Atomic Number

Number of Electrons = Atomic Number

Number of Neutrons = Atomic Mass – Atomic Number