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Home Q & A Board Science-Related Homework Help Chemistry (Moderator: Laser_3)
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budsworth budsworth
wrote...
Posts: 78
Rep: 2 0
11 years ago
True or False, An atom with a different number of neutrons than protons is called an Isotope?

How can this be true, though? Alot of elements in the periodic table do not have an equal amount of neutrons. For example, the atomic number of Zinc is 30 and the atomic weight is 65.409. If there are 30 protons and 30 neutrons which give atomic weight, the total atomic weight should be 60. Unless Zinc is actually an isotope?
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lfh
wrote...
#1
11 years ago
true
wrote...
#2
11 years ago
It is false.
Just look for hydrogen; it only has a proton and an electron.

An example for isotopes:
These are isotopes of hydrogen:
  deuterium; with 1 proton and 1 neutron
  tritium; with 1 proton and 2 neutrons

MJ
wrote...
#3
11 years ago
true, if it has a different # of protons its a different atomic number and element
wrote...
#4
11 years ago
yeah thats true

actually mass no is different from atomic wt

atomic wt is a relative statement wherein u take the mass of c12 to be 12 units    whereas mass no is no of protons + no of electrons
wrote...
#5
11 years ago
True. Don't forget the atom of zinc also has 30 electrons, this is what the atomic number is based on. And each neutron is heavier than each proton. other factors that determine the weight is due to the fusion process.
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