The disilicate ion is ________.
A) Si2O88-
B) Si2O76-
C) Si2O84-
D) Si2O86-
E) Si2O72-
Question 2
Which transformation could take place at the cathode of an electrochemical cell?
A) MnO2 MnO4-
B) Br2 BrO3-
C) NO HNO2
D) HSO4- H2SO3
E) Mn2+ MnO4-
Question 3
Potassium metal crystallizes in a body-centered cubic structure with a unit cell edge length of 5.31 . The radius of a potassium atom is ________ .
A) 1.33
B) 1.88
C) 2.30
D) 2.66
E) 5.31
