Given the 1h and 13c data below, which isomers of c8h11n fit the spectral data? 13c nmr: δ 17.2, 20.4, 115.1, 122.4, 137.3, 127.6, 131.1, 142.1 ppm

In the 1800s, one of the statements in john dalton's atomic theory was that atoms are indivisible. later experimental evidence led to the discovery of subatomic particles such as neutrons, electrons, and protons. what happened to the indivisible atom part of dalton's atomic theory, and why?

Which of the following did jj thompson discover about atoms? a)an atom has an internal structure. b) atoms are tiny indivisible particles. c)electrons orbit the nucleus of an atom. d) the nucleus of an atom contains protons and neutrons.

Draw the lewis dot structure for each of the following polyatomic ions