How much of the electromagnetic spectrum is visible to us A. all of it
B. None of it
C. Most of it
D. A small part of it

7. what temperature is need to just dissolve 50 g of nh4cl in 75 g of water? '

What are the first three quantum numbers for the electrons located in subshell 2s?

Which reason best explains why metals are malleable? a)because they have delocalized electrons b)because they have localized electrons c)because they have ionic bonds d)because they have rigid bonds