What are the protons neutrons and electrons of aluminum?
|Atomic Mass||26.982 atomic mass units|
|Number of Protons||13|
|Number of Neutrons||14|
|Number of Electrons||13|
A quick looks in the periodic table will show that aluminium has an atomic number equal to 13 . This means that any atom that is an isotope of aluminium will have 13 protons in its nucleus.
- The number of neutrons in an aluminum atom depends on the isotope. Al has the atomic number 13, that is it has 13 protons in the atom (Aluminium ). The most common and natural isotopes are Al27 and Al26 thus these atoms have 14 and 13 neutrons respectively (Isotopes of aluminium ).
- 13 electrons
- Elements are defined by the number of protons they have. If the atom is neutral, uncharged, it will have 10 electrons. There are three naturally occurring isotopes of neon, neon-20 with 10 neutrons, , neon-21 with 11 neutrons, and neon-22 with 12 neutrons.
So for the element of ALUMINUM, you already know that the atomic number tells you the number of electrons. That means there are 13 electrons in a aluminum atom. Looking at the picture, you can see there are two electrons in shell one, eight in shell two, and three in shell three.
- Aluminium is usually considered to be a metal, as described in the Wikipedia article Metalloids: Aluminium: Aluminium is ordinarily classified as a metal. It is lustrous, malleable and ductile, and has high electrical and thermal conductivity.
- Data Zone
Classification: Aluminum is an 'other metal' Color: silvery Atomic weight: 26.98154 g/mol State: solid Melting point: 660.32 oC, 933.57 K
- To make aluminium the ore (bauxite) must first be mined. The main sources of bauxite are in Australia, South America and Africa, but other countries including China, Jamaica, India and USA also have large amounts of the ore.
Here, mass number is 27 and there are 14 neutrons hence protons=27-14=13. In a neutral atom, number of protons=number of electrons. Hence in this case the number of electrons in the neutral atom will be 13. Now, since the atom carries +3 charge hence it will have 13-3=10 electrons.
- CATIONS. Initially, the aluminum atom had a charge of +13 + (−13) = 0; in other words, its charge was neutral due to the equal numbers of protons and electrons. When it becomes an ion, it loses 3 electrons, leaving behind only 10. Now the charge is +13 + (−10) = +3.
- This tells us that each subshell has double the electrons per orbital. The s subshell has 1 orbital that can hold up to 2 electrons, the p subshell has 3 orbitals that can hold up to 6 electrons, the d subshell has 5 orbitals that hold up to 10 electrons, and the f subshell has 7 orbitals with 14 electrons.
- 11 electrons
Updated: 2nd October 2019