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Title: How do you work out how many electrons, protons and neutrons an element has? Post by: lferus on Sep 8, 2012 For example, on the periodic table nitrogen says 7N. 7 is the atomic number. How can u tell by the number 7 how many electrons, protons and neutrons the element has?
Title: How do you work out how many electrons, protons and neutrons an element has? Post by: Tonbon1221 on Sep 8, 2012 count how many rows down the element is and that is how many e- are in the outermost ring and how many rings there are total. then we know that each ring has octate in the other rings. 99.9% sure. just finished chem 1a and that was the only part i did understand.
Title: How do you work out how many electrons, protons and neutrons an element has? Post by: lfontes on Sep 8, 2012 Protons - the atomic number equals the number of protons
Electrons - equal to the number of protons provided the element has no charge Neutron - Atomic Mass (rounded to the nearest whole number) minus number of protons Title: How do you work out how many electrons, protons and neutrons an element has? Post by: tonio613 on Sep 8, 2012 the atomic number indicates the total number of protons the element has .the no. of protons is equal to the no. of electrons as the atom is neutral. Now the mass no. gives the total of protons +neutrons.so the mass no.- the atomic no. gives the neutron no.
Title: How do you work out how many electrons, protons and neutrons an element has? Post by: irina on Sep 8, 2012 Number or electrons = Number of Protons = Atomic Number
For number of neutrons u need to deduct the atomic number from the massnumber. For nitrogen the mass number is 14 hence Electrons = 7 Protons = 7 NEutrons = 7 Title: How do you work out how many electrons, protons and neutrons an element has? Post by: oates151 on Sep 8, 2012 The atomic number IS the number of protons an element has in its atomic nucleus. So nitrogen has 7 protons.
The number of neutrons can vary, depending on the isotope. But generally speaking. No of Neutrons = Atomic Mass - Atomic Number The number of electrons is even trickier to explain, as this can vary between atoms depending on its 'valency'. If the charge of the atom is neutral. Than the number of electrons is Equal to the number of protons. But if there is a charge of +1 then there is one more proton than there is electrons. If it is -1 than there is one more electron than there are protons. Title: How do you work out how many electrons, protons and neutrons an element has? Post by: Tonbon1221 on Sep 8, 2012 Since the atomic number of N is 7, your number of protons is also 7.
Think about the protons being positively charged. Electrons are negatively charged and since atoms aren't supposed to have a charge... You would also have 7 electrons. 7protons + (-7)electrons = 0 Neutrons have no charge. They just add weight to the atom. So, since the atomic mass of N is 14. 14 = 7protons + ?Neutrons Leaving you with 7 neutrons. Title: How do you work out how many electrons, protons and neutrons an element has? Post by: bufi on Sep 8, 2012 Atomic number=Z=Number of protons or electrons present in the atom.
If Z=7,then electrons=7,protons=7 For the elements whose Z is below 20 Atomic mass=double of atomic number. Atomic mass=Number of protons+nuetrons,So Number of nuetrons=Atomic mass-No of protons Then,Number of nuetrons=14-7=7 Title: How do you work out how many electrons, protons and neutrons an element has? Post by: tom_van on Sep 8, 2012 try using an electron microscope and a calculator - worked for me, althogh i did drop chem class -- but it was while passing - no really
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