50 pts with brainliest What is the wavelength of light that has an energy of 1.50 x 10^-18 J? what color light is this?

What is the atomic mass of an atom that has 6 protons, 6 neutrons, and 6 electrons? a) 6 b) 8 c) + 1 d) 12 e) 18

Which element has the lowest electronegativity? calcium(ca) gallium(ga) selenium(se) bromine(br)

Asample of hydrated tin (ii) chloride (sncl2) has a mass of 4.90 g. when it is dehydrated, it has a mass of 4.10 g. which is the correct chemical formula for the hydrate? sncl2•2h2o          sncl2•4h2o          sncl2•6h2o