The number of protons in the nucleus of an atom determines the species of the atom, i. e., the element to which the atom belongs. an atom has the same number of protons and neutrons. but the electron number cannot be used instead because electrons are not within the nucleus electrons are negatively charged electrons can be removed from or added to an atom electrons are lighter than protons

For ai it's atomic number is 13 and it's mass number is 27 how many neutrons does it have

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.

Using the first volume and temperature reading on the table as v1 and t1, solve for the unknown values in the table below. remember to use the rules of significant figures when entering your numeric response.