Oddi wrth Wicipedia, y gwyddoniadur rhydd.
| Rhif |
Elfen |
Sym. |
| 1 |
hydrogen |
H |
| 2 |
heliwm |
He |
| 3 |
lithiwm |
Li |
| 4 |
beriliwm |
Be |
| 5 |
boron |
B |
| 6 |
carbon |
C |
| 7 |
nitrogen |
N |
| 8 |
ocsigen |
O |
| 9 |
fflworin |
F |
| 10 |
neon |
Ne |
| 11 |
sodiwm |
Na |
| 12 |
magnesiwm |
Mg |
| 13 |
alwminwm |
Al |
| 14 |
silicon |
Si |
| 15 |
ffosfforws |
P |
| 16 |
sylffwr |
S |
| 17 |
clorin |
Cl |
| 18 |
argon |
Ar |
| 19 |
potasiwm |
K |
| 20 |
calsiwm |
Ca |
| 21 |
scandiwm |
Sc |
| 22 |
titaniwm |
Ti |
| 23 |
vanadiwm |
V |
| 24 |
cromiwm |
Cr |
| 25 |
manganîs |
Mn |
| 26 |
haearn |
Fe |
| 27 |
cobalt |
Co |
| 28 |
nicel |
Ni |
| 29 |
copr |
Cu |
| 30 |
sinc |
Zn |
| 31 |
galiwm |
Ga |
| 32 |
germaniwm |
Ge |
| 33 |
arsenig |
As |
| 34 |
seleniwm |
Se |
| 35 |
bromin |
Br |
| 36 |
krupton |
Kr |
| 37 |
rwbidiwm |
Rb |
| 38 |
strontiwm |
Sr |
| 39 |
ytriwm |
Y |
| 40 |
sirconiwm |
Zr |
| 41 |
niobiwm |
Nb |
| 42 |
molybdenwm |
Mo |
| 43 |
technetiwm |
Tc |
| 44 |
rutheniwm |
Ru |
| 45 |
rhodiwm |
Rh |
| 46 |
paladiwm |
Pd |
| 47 |
arian |
Ag |
| 48 |
cadmiwm |
Cd |
| 49 |
indiwm |
In |
| 50 |
tun |
Sn |
| 51 |
antimoni |
Sb |
| 52 |
telwriwm |
Te |
| 53 |
ïodin |
I |
| 54 |
senon |
Xe |
| 55 |
cesiwm |
Cs |
| 56 |
bariwm |
Ba |
| 57 |
lanthanwm |
La |
| 58 |
ceriwm |
Ce |
| 59 |
praseodymiwm |
Pr |
| 60 |
neodymiwm |
Nd |
| 61 |
promethiwm |
Pm |
| 62 |
samariwm |
Sm |
| 63 |
europiwm |
Eu |
| 64 |
gadoliniwm |
Gd |
| 65 |
terbiwm |
Tb |
| 66 |
dysprosiwm |
Dy |
| 67 |
holmiwm |
Ho |
| 68 |
erbiwm |
Er |
| 69 |
thuliwm |
Tm |
| 70 |
yterbiwm |
Yb |
| 71 |
lwtetiwm |
Lu |
| 72 |
hafniwm |
Hf |
| 73 |
tantalwm |
Ta |
| 74 |
twngsten |
W |
| 75 |
rheniwm |
Re |
| 76 |
osmiwm |
Os |
| 77 |
iridiwm |
Ir |
| 78 |
platinwm |
Pt |
| 79 |
aur |
Au |
| 80 |
mercwri |
Hg |
| 81 |
thaliwm |
Tl |
| 82 |
plwm |
Pb |
| 83 |
bismwth |
Bi |
| 84 |
poloniwm |
Po |
| 85 |
astatin |
At |
| 86 |
radon |
Rn |
| 87 |
ffransiwm |
Fr |
| 88 |
radiwm |
Ra |
| 89 |
actiniwm |
Ac |
| 90 |
thoriwm |
Th |
| 91 |
protactiniwm |
Pa |
| 92 |
wraniwm |
U |
| 93 |
neptwniwm |
Np |
| 94 |
plwtoniwm |
Pu |
| 95 |
americiwm |
Am |
| 96 |
cwriwm |
Cm |
| 97 |
berkeliwm |
Bk |
| 98 |
californiwm |
Cf |
| 99 |
einsteiniwm |
Es |
| 100 |
fermiwm |
Fm |
| 101 |
mendelefiwm |
Md |
| 102 |
nobeliwm |
No |
| 103 |
lawrenciwm |
Lr |
| 104 |
rutherfordiwm |
Rf |