That's basically just a copy of the Wikipedia article.  
   Arado Ar 234 Blitz3    Arado Ar 234B-21,2,3,4    Arado Ar 234C3
Type    Bomber3, Reconnaissance3    Bomber1,2,4, Reconnaissance1     
Crew    13    11,2,4     
Engine (Type)    2: Junkers Jumo 004B turbojets3    2: BMW 003A-1 turbojets2
2: Junkers Jumo 004 B4
2: Junkers Jumo 004B-1 Orkan turbojets1    4: BMW 003A turbojets3
Thrust - BMW         1,764 lb2
7.85 kN2    1,760 lb3
7.9 kN3
Thrust - Junkers    1,980 lb3
8.9 kN3    1,975 lb1, 1,980 lb4
8.8 kN1     
Dimensions               
Span    46 3.5"3
14.11 m3    46'1, 46' 3"4, 46' 3.5"2
14.44 m1,2     
Length    41' 5.5"3
12.64 m3    41'1, 41' 5.5"2, 41' 6"4
12.64 m1,2     
Height    14' 1.25"3
4.3 m3    14'1, 14' 1"4, 14' 1.5"2
4.29 m1,2     
Wing area         284.17 ft2 2, 294 ft2 1
27.3 m2 1,2     
Weight               
Empty         11,440 lb1, 11,464 lb2,3
5,200 kg2,3, 5,300 kg1     
Normal load         18,540 lb3, 18,541 lb4
8,410 kg3     
Loaded         21,560 lb1, 21,6052, 21,715 lb3
9,800 kg1,2, 9,850 kg3     
Performance               
Speed @ 19,685' /
6,000 m         461 mph2,4
742 kph2     
Speed @ 20,000' /
6,000 m         460 mph1
742 kph1     
Speed @ 26,250' /
8,000 m    460 mph3
740 kph3          
Speed @ 32,810' /
10,000 m    435 mph3
700 kph3          
Climb to 19,685' /
6,000 m    12.8 minutes3    12.8 minutes2     
Service ceiling    32,810'3
10,000 m3    32,810'2, 33,000'1,4
10,000 m1,2     
Range    1,013 miles3
1,630 km3    1,010 miles1, 1,013 miles2, 1,103 miles4
1,630 km1,2     
Range with max bomb load    684 miles3
1,100 km3          
Armament               
Rear firing    2: 20 mm3    2: 20 mm MG 1514     
Bombs    3,307 lb3
1,500 kg3    3,300 lb4, 4,400 lb1, 4,409 lb2
1,995 kg1, 2,000 kg2     
Sources:
1    Aircraft of WWII, General Editor: Jim Winchester, 2004
 2   Fighting Aircraft of World War II, Editor: Karen Leverington, 1995
 3   Aircraft of WWII, Stewart Wilson, 1998
  4  World War II Airplanes Volume 1, Enzo Angelucci, Paolo Matricardi, 1976
http://www.wwiivehicles.com/germany/aircraft/bomber/arado-ar-234.asp             Arado Ar 234 Blitz3              Arado Ar 234B-2
Armament               
Rear firing      2: 20 mm3                  2: 20 mm MG 1514    of the 270 or so built how many were accounted for? and is there proof that not one had a gun in it?