An aluminum atom has an atomic variety of 13 and a mass number of 27. A) How plenty of protons are there in an atom that aluminum? b) How numerous neutrons are there in one atom the aluminum? c) How numerous electrons room there in an atom of aluminum?

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an aluminum atom has an atomic number of 13 and a mass variety of 27. How countless protons room there in one atom the aluminum?

Aluminum is one element. One aluminum atom is composed of a positively fee nucleus surrounding by a negatively fee electron cloud. Within the nucleus space positively charged protons and neutral neutrons. Our first question is, how plenty of protons room there in an atom the aluminum? as I’ve simply said, those protons room to be uncovered in the nucleus. The question has offered us 2 properties of one aluminum atom that can help: the atom number and the mass number.

The atomic variety of an atom is the number of protons in the cell core of the atom. For this aluminum atom and indeed every aluminum atoms, the atom number is same to 13. Therefore, the variety of protons in one atom the aluminum is 13. I’ll simply store away that value due to the fact that it will certainly come in comfortable later.

How many neutrons space there in one atom of aluminum?

just like protons, neutrons have the right to be found in the cell core of the atom that aluminum. Come answer this part of the question, we’re walk to need the massive number. The massive number is the variety of protons and also neutrons in the cell core of the atom. For this specific atom of aluminum, the mass number is 27. Therefore, in this particular atom that aluminum, the number of protons and neutrons is 27. So we have the right to calculate the variety of neutrons by taking the variety of protons far from the number of protons and also neutrons. Therefore, the variety of neutrons is same to 27 protons and also neutrons minus 13 protons, i beg your pardon we have the right to simplify come 27 minus 13 which gives us 14 neutrons. This is the exact same number we would gain if us took far the atomic number native the massive number. For this reason this details atom that aluminum has 14 neutrons.

Now, onto the last part of this question.

How plenty of electrons are there in an atom the aluminum?

The electrons of an atom the aluminum deserve to be discovered in the space around its nucleus. In order come answer this question, we need three bits that information. The first piece of details is the atoms in this context room neutral overall. Individual protons are said to have a charge of positive one and also electrons are said to have actually a fee of an adverse one. Neutrons have no fee whatsoever. So we don’t require to include them in this component of the question. The as whole charge for an atom or ion is always the full charge the the proton plus the total charge that the electrons.

In this case, we have actually 13 protons. Therefore the charge of the protons is equal to 13 multiply by the fee per proton hopeful one. The complete charge of our electrons is unknown due to the fact that we don’t understand the number of electrons. But if us did, the total charge of electrons would be same to the number of electrons multiply by the fee per electron, an adverse one. In this case, we recognize that the overall charge is same to zero. Through a small bit that jiggling about, we deserve to see that the number of protons is same to the variety of electrons indigenous neutral particle. Therefore, for an atom the aluminum, there are 13 electrons inside it.