Hydrogen has three isotopes, 1h, 2h, and 3h. what is the difference between these three isotopes?
a. the number of protons ranges from 1 to 3.
b. the number of electrons ranges from 1 to 3.
c. the number of neutrons ranges from 0 to 2.
d. the number of protons ranges from 0 to 2.

In the cathode ray tube experiment, j. j. thomson passed an electric current through different gases inside a cathode ray tube in the presence of an electric field. in which two ways did this experiment change scientists’ understanding of the atom?

Which ocean zone has the most abundant primary producer and why a) the abyssopelagic zone ,du to the absence of light and cold water temperatureb) the bathypelagic zone, due to the absence of light and cold water temperaturec) the mesopelagic zone ,due to uts high light availability and warm water temperature d) the epipelagic zone,due to its high light availability and warm water temperature

Draw the structure for 5-isopropyl-2-methyl-3-nonene