There are 13 protons.
Aluminum's atomic number is 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.)
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.
Aluminum has 13 protons. The atomic number assigned on the periodic table is equivalent to the number of protons an element has.
13
Aluminium has 13 protons in all isotopes.
There are 13 protons in an atom of aluminum, regardless of the isotope. If it didn't have 13 protons, it wouldn't be aluminum, it would be something else. There are 14 neutrons in an atom of aluminum 27, its only stable isotope.See the Related Questions for how to count the number of protons, neutrons and electrons in any atom of any element.
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 and approximately 14 neutrons.
9.4 grams
The elements arranged from least to greatest number of protons are hydrogen (1 proton), aluminum (13 protons), calcium (20 protons), oxygen (8 protons), and fluorine (9 protons). Therefore, the correct order is hydrogen, aluminum, oxygen, fluorine, and calcium.