Tabl Cyfnodol yr Elfennau

Priodweddau Orbitalau Isotopau
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
1 1 H Hydrogen 1.007941 # Atomig Symbol Enw Pwysau Atomig


C Solidau
Hg Hylifau
H Nwyon
Rf Anhysbys
Metelau Meteloidau Anfetelau
Metel alcalïaidd Metelau daear alcalïaidd Lanthanidau Elfennau cyfnewidiol Metelau eraill Anfetelau eraill Halogenau Nwyon nobl
Actinidau
Kelvin
°Celsiws
°Fahrenheit
7s ↑↓
6s ↑↓
5s ↑↓
4s ↑↓
3s ↑↓
2s ↑↓
1s ↑↓
7p ↑↓↑↓↑↓
6p ↑↓↑↓↑↓
5p ↑↓↑↓↑↓
4p ↑↓↑↓↑↓
3p ↑↓↑↓↑↓
2p ↑↓↑↓↑↓
6d ↑↓↑↓↑↓↑↓↑↓
5d ↑↓↑↓↑↓↑↓↑↓
4d ↑↓↑↓↑↓↑↓↑↓
3d ↑↓↑↓↑↓↑↓↑↓
l=
m=
n=
5f ↑↓↑↓↑↓↑↓↑↓↑↓↑↓
4f ↑↓↑↓↑↓↑↓↑↓↑↓↑↓
s
p
d
f
α Dadfeiliad alffa β Dadfeiliad beta
p Allyriad proton β+ Beta+ decay
n Allyriad niwtron EC Daliad electron
SF Ymholltiad digymell   Sefydlog
2 He Heliwm 4.0026022 K
2 3 Li Lithiwm 6.9412
1		 4 Be Beriliwm 9.0121822
2		 5 B Boron 10.8112
3		 6 C Carbon 12.01072
4		 7 N Nitrogen 14.00672
5		 8 O Ocsigen 15.99942
6		 9 F Fflworin 18.99840322
7		 10 Ne Neon 20.17972
8		 K
L
3 11 Na Sodiwm 22.989769282
8
1		 12 Mg Magnesiwm 24.3052
8
2		 13 Al Alwminiwm 26.98153862
8
3		 14 Si Silicon 28.08552
8
4		 15 P Ffosfforws 30.9737622
8
5		 16 S Sylffwr 32.0652
8
6		 17 Cl Clorin 35.4532
8
7		 18 Ar Argon 39.9482
8
8		 K
L
M
4 19 K Potasiwm 39.09832
8
8
1		 20 Ca Calsiwm 40.0782
8
8
2		 21 Sc Scandiwm 44.9559122
8
9
2		 22 Ti Titaniwm 47.8672
8
10
2		 23 V Fanadiwm 50.94152
8
11
2		 24 Cr Cromiwm 51.99612
8
13
1		 25 Mn Manganîs 54.9380452
8
13
2		 26 Fe Haearn 55.8452
8
14
2		 27 Co Cobalt 58.9331952
8
15
2		 28 Ni Nicel 58.69342
8
16
2		 29 Cu Copr 63.5462
8
18
1		 30 Zn Sinc 65.382
8
18
2		 31 Ga Galiwm 69.7232
8
18
3		 32 Ge Germaniwm 72.642
8
18
4		 33 As Arsenig 74.92162
8
18
5		 34 Se Seleniwm 78.962
8
18
6		 35 Br Bromin 79.9042
8
18
7		 36 Kr Crypton 83.7982
8
18
8		 K
L
M
N
5 37 Rb Rwbidiwm 85.46782
8
18
8
1		 38 Sr Strontiwm 87.622
8
18
8
2		 39 Y Ytriwm 88.905852
8
18
9
2		 40 Zr Sirconiwm 91.2242
8
18
10
2		 41 Nb Niobiwm 92.906382
8
18
12
1		 42 Mo Molybdenwm 95.962
8
18
13
1		 43 Tc Technetiwm (98)2
8
18
13
2		 44 Ru Rwtheniwm 101.072
8
18
15
1		 45 Rh Rhodiwm 102.90552
8
18
16
1		 46 Pd Paladiwm 106.422
8
18
18		 47 Ag Arian 107.86822
8
18
18
1		 48 Cd Cadmiwm 112.4112
8
18
18
2		 49 In Indiwm 114.8182
8
18
18
3		 50 Sn Tun 118.712
8
18
18
4		 51 Sb Antimoni 121.762
8
18
18
5		 52 Te Telwriwm 127.62
8
18
18
6		 53 I Ïodin 126.904472
8
18
18
7		 54 Xe Senon 131.2932
8
18
18
8		 K
L
M
N
O
6 55 Cs Cesiwm 132.90545192
8
18
18
8
1		 56 Ba Bariwm 137.3272
8
18
18
8
2		 57–71 72 Hf Hafniwm 178.492
8
18
32
10
2		 73 Ta Tantalwm 180.947882
8
18
32
11
2		 74 W Twngsten 183.842
8
18
32
12
2		 75 Re Rheniwm 186.2072
8
18
32
13
2		 76 Os Osmiwm 190.232
8
18
32
14
2		 77 Ir Iridiwm 192.2172
8
18
32
15
2		 78 Pt Platinwm 195.0842
8
18
32
17
1		 79 Au Aur 196.9665692
8
18
32
18
1		 80 Hg Mercwri 200.592
8
18
32
18
2		 81 Tl Thaliwm 204.38332
8
18
32
18
3		 82 Pb Plwm 207.22
8
18
32
18
4		 83 Bi Bismwth 208.98042
8
18
32
18
5		 84 Po Poloniwm (209)2
8
18
32
18
6		 85 At Astatin (210)2
8
18
32
18
7		 86 Rn Radon (222)2
8
18
32
18
8		 K
L
M
N
O
P
7 87 Fr Ffransiwm (223)2
8
18
32
18
8
1		 88 Ra Radiwm (226)2
8
18
32
18
8
2		 89–103 104 Rf Rutherfordiwm (267)2
8
18
32
32
10
2		 105 Db Dubniwm (268)2
8
18
32
32
11
2		 106 Sg Seaborgiwm (271)2
8
18
32
32
12
2		 107 Bh Bohriwm (272)2
8
18
32
32
13
2		 108 Hs Hasiwm (270)2
8
18
32
32
14
2		 109 Mt Meitneriwm (276)2
8
18
32
32
15
2		 110 Ds Darmstadtiwm (281)2
8
18
32
32
17
1		 111 Rg Roentgeniwm (280)2
8
18
32
32
18
1		 112 Cn Coperniciwm (285)2
8
18
32
32
18
2		 113 Uut Ununtriwm (284)2
8
18
32
32
18
3		 114 Uuq Ununcwadiwm (289)2
8
18
32
32
18
4		 115 Uup Ununpentiwm (288)2
8
18
32
32
18
5		 116 Uuh Ununhecsiwm (293)2
8
18
32
32
18
6		 117 Uus Ununseptiwm (294)2
8
18
32
32
18
7		 118 Uuo Ununoctiwm (294)2
8
18
32
32
18
8		 K
L
M
N
O
P
Q
Am elfennau heb isotopau sefydlog, gosodir rhif màs yr isotop â'r hanner-oes hirraf mewn cromfachau.
Tabl Cyfnodol Hawlfraint Dyluniad & Rhyngwyneb © 1997 Michael Dayah. Ptable.com Diweddariad diwethaf 2010 Medi 3 
57 La Lanthanwm 138.905472
8
18
18
9
2		 58 Ce Ceriwm 140.1162
8
18
19
9
2		 59 Pr Praseodymiwm 140.907652
8
18
21
8
2		 60 Nd Neodymiwm 144.2422
8
18
22
8
2		 61 Pm Promethiwm (145)2
8
18
23
8
2		 62 Sm Samariwm 150.362
8
18
24
8
2		 63 Eu Ewropiwm 151.9642
8
18
25
8
2		 64 Gd Gadoliniwm 157.252
8
18
25
9
2		 65 Tb Terbiwm 158.925352
8
18
27
8
2		 66 Dy Dysprosiwm 162.52
8
18
28
8
2		 67 Ho Holmiwm 164.930322
8
18
29
8
2		 68 Er Erbiwm 167.2592
8
18
30
8
2		 69 Tm Thwliwm 168.934212
8
18
31
8
2		 70 Yb Yterbiwm 173.0542
8
18
32
8
2		 71 Lu Lwtetiwm 174.96682
8
18
32
9
2
89 Ac Actiniwm (227)2
8
18
32
18
9
2		 90 Th Thoriwm 232.038062
8
18
32
18
10
2		 91 Pa Protactiniwm 231.035882
8
18
32
20
9
2		 92 U Wraniwm 238.028912
8
18
32
21
9
2		 93 Np Neptwniwm (237)2
8
18
32
22
9
2		 94 Pu Plwtoniwm (244)2
8
18
32
24
8
2		 95 Am Americiwm (243)2
8
18
32
25
8
2		 96 Cm Curiwm (247)2
8
18
32
25
9
2		 97 Bk Berceliwm (247)2
8
18
32
27
8
2		 98 Cf Califforniwm (251)2
8
18
32
28
8
2		 99 Es Einsteiniwm (252)2
8
18
32
29
8
2		 100 Fm Ffermiwm (257)2
8
18
32
30
8
2		 101 Md Mendelefiwm (258)2
8
18
32
31
8
2		 102 No Nobeliwm (259)2
8
18
32
32
8
2		 103 Lr Lawrenciwm (262)2
8
18
32
32
8
3

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