[cu(nh3)4]^+2 solutions exhibit a deep blue-violet color. how can you use spectrophotometry to confirm that this reaction has occurred and that the product formed is in fact tetraamminecopper (ll) sulfate? would you expect the wavelength of maximum absorbance (lambda max) for cu(nh3)4^+2 to be greater than or less than lambda max for cu(h20)6^+2? explain

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.

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the atomic number of carbon is six, which means that a carbon atom has six protons. carbon has three naturally occurring isotopes: carbon-12, carbon-13, and carbon-14. which of these statements are true about carbon and its isotopes? select all that appl