lines in the balmer series of the hydrogen spectrum are observed at 656.3, 486.1, 434.0, and 410.2 nm. what is the wavelength of the next line in the series?

The table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 10 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of the two atoms? both are unreactive. both are highly reactive. a is unreactive and d is reactive. a is reactive and d is unreactive.

Which formula can be used to calculate the molar mass of hydrogen peroxide

How do you lengthen a pattern piece? (family and consumer science, sewing)