There are 13 protons.
Aluminum's atomic number is 13.
No, the atomic number refers to the number of protons in an atom. There are 13 protons in an aluminum atom, hence the atomic number is 13.
13
The number of neutrons is irrelevant for determining the element. 13 protons makes it aluminum. (The isotope of aluminum with 13 neutrons is unstable and radioactive, with a half-life of about 720,000 years.)
yes, all aluminum atoms have the same number of protons. The number of protons in an atom give it its identity. Isotopes are different atoms of the same element with the same number of protons, but a different number of neutrons.
A neutral atom of aluminum has 13 electrons, the same as the number of protons, which is its atomic number.
Aluminum has 13 protons. The atomic number assigned on the periodic table is equivalent to the number of protons an element has.
9.4 grams
Aluminium has 13 protons in all isotopes.
All atoms of aluminum (aluminium) have 13 protons. Neutral atoms will also have 13 electrons.
13, same as its atomic number.
Aluminum is 13 because that is the atomic number (the number of protons). The atomic mass number is the number of protons and neutrons in an atom. In this, you just subtract the number of protons from the mass number. If Aluminum (Al), #13, has a mass number of 27, then it has 14 neutrons. Pretty simple.