For me the answer is E. It is composed of one Ru2+ ion and two F- ions.
Answer:
have stars that might appear to wobble
often have one star that is brighter than the other
Explanation:
A binary star system is a star system made up of mostly two stars that moves round their common fixed center.
The two orbiting stars are gravitationally bonded to one another and they move round each other.
Most binary stars might appear wobble. One of the stars often appears brighter than the other.
Males are represented my a square
if he is affected by a defective gene he should show a shaded square that differs from normal males just like this■
