The two letter symbol for Washington is WA also here is a list of all the others
ALABAMA
AL
ALASKA
AK
AMERICAN SAMOA
AS
ARIZONA
AZ
ARKANSAS
AR
CALIFORNIA
CA
COLORADO
CO
CONNECTICUT
CT
DELAWARE
DE
DC
FEDERATED STATES OF MICRONESIA
FM
FLORIDA
FL
GEORGIA
GA
GUAM
GU
HAWAII
HI
IDAHO
ID
ILLINOIS
IL
INDIANA
IN
IOWA
IA
KANSAS
KS
KENTUCKY
KY
LOUISIANA
LA
MAINE
ME
MH
MARYLAND
MD
MASSACHUSETTS
MA
MICHIGAN
MI
MINNESOTA
MN
MISSISSIPPI
MS
MISSOURI
MO
MONTANA
MT
NEBRASKA
NE
NEVADA
NV
NEW HAMPSHIRE
NH
NEW JERSEY
NJ
NEW MEXICO
NM
NEW YORK
NY
NC
NORTH DAKOTA
ND
NORTHERN MARIANA ISLANDS
MP
OHIO
OH
OKLAHOMA
OK
OREGON
OR
PALAU
PW
PENNSYLVANIA
PA
PUERTO RICO
PR
RHODE ISLAND
RI
SOUTH CAROLINA
SC
SOUTH DAKOTA
SD
TENNESSEE
TN
TEXAS
TX
UTAH
UT
VERMONT
VT
VIRGIN ISLANDS
VI
VIRGINIA
VA
WASHINGTON
WA
WEST VIRGINIA
WV
WISCONSIN
WI
WYOMING
WY
Sodium
Chemical symbol
Chemical Symbol.
the only two letters in the element symbol are J and Q
In the symbol W, the single letter is capitalized. In the two-letter symbol Hg, the first letter is a capital and the second letter is lowercase.
Washington, D.C., is a symbol of the country because it is the capital of the country.
The first letter is a capital letter; example for sodium: Na.
The letter O was already used as the symbol for oxygen. Therefore the symbol for Osmium was the first two letters of the element's name.
Sn, Tin
Omps
Omps
It is refered to as the Elements symbol.