Answer:
Option B, Rubidium can form basic compounds
Step-by-step explanation:
Basic compounds are those which have the ability to neutralize an acid. Such compounds may or may not contain OH- ion.
Some of the elements which form the strong bases are -
a) Lithium - hydroxide form
b) Sodium - hydroxide form
c) Potassium- hydroxide form
d) Rubidium- hydroxide form
e) Cesium- hydroxide form
f) Calcium- Carbonate or hydroxide form
g) Strontium- hydroxide form
g) Barium- hydroxide form
Hence, option B, Rubidium can form basic compounds