Why did becquerel expose uranium crystals to sunlight in his initial experiment?
he wanted to show that warmed crystals radiate heat.
he wanted to show that the crystals emit x-rays.
he wanted to show that the crystals emit light after absorbing light.
he wanted to show that the crystals would become radioactive when they were exposed to sunlight.

option b

Explanation:

the number of protons in the nucleus of a given element. has slight luster and conducts electricity at high temperatures like metal.but like a nonmetal,boron is brittle and does not conduct electricity well at low temperatures. in graphite, carbon is a soft,brittle solid.it is reflective,ductile,or malleable.

im pretty sure its b