How many valence shell electrons does an atom of indium have?

Atomic Number of Indium is 49

Electronic Configuration of Indium is

                                               Kr 4d¹⁰ 5s² 5p¹

Valence Shell = 5

# of Electrons in 5th Shell  =  3

Result:
           Indium has 3 valence shell electrons.

The use of piers and beams to build a strong foundation for a house.

The  grandmother cell  is a hypothetical  neuronthat represents a complex but specific concept or object.[1]  it activates when a person "sees, hears, or otherwise sensibly discriminates"[2]  a specific entity, such as his or her grandmother. the term was in use at least as early as 1966 amongst staff and students in the department of experimental psychology, university of cambridge, england. a similar concept, that of the  gnostic neuron, was proposed two years later