Identifies the number and location of protons in a lithium atom?

1) these are barrel shaped microtubules in most animal cells, that organize the spindles during cell division

An electron moved from shell n = 2 to shell n = 1. what most likely happened during the transition? a fraction of a photon was added. a photon of energy was absorbed. a fraction of a photon was removed. a photon of energy was released.

Draw the skeletal structures of two different molecules that are each made of 5 carbon atoms and 12 hydrogen atoms.