Mercury's atomic emission spectrum is shown below.
hg
x (nm) 400 450 500 550 600 650 700
estimate the wavelength of the dark green line.
x m
enter a number, quency?
hz
what is the energy of an dark green photon emitted by the mercury atom?

Which best describes why nh4+ can form an ionic bond with cl-?

What does a complete balanced chemical equation include? a. exothermic coefficients b. endothermic coefficients c. valence electrons d. molar coefficients

13. a covalent bond between two atoms is likely to be polar if: a. one of the atoms is much more electronegative than the other. b. the two atoms are equally electronegative. c. the two atoms are of the same element. d. the bond is part of a tetrahedrally shaped molecule. e. one atom is an anion.