Which lists the waves in order of wavelength, from longest to shortest

Consider the two electron arrangements for neutral atoms a and b. are atoms a and b the same element? a - 1s2, 2s2, 2p6, 3s1 b - 1s2, 2s2, 2p6, 5s1

What will most likely happen when two bromine atoms bond together?

Melissa is interested in her family tree and how her family has changed over its many generations. melissa probably more closely resembles