How many lone pairs are on the central atom in GeH4?

Which atom or ion is the largest? a. k b. k+ c. ca d. ca2+ e. li

Clyde and marilyn are riding a roller coaster. during which section(s) of the track is their potential energy converted to kinetic energy? a. from point b to point c only b. from point b to point d only c. from point a to point b only d. from point a to point b and from point c to point d

What are the constituent metals of stainless steel?