0
If you literally mean "even number", because there aren't always an even number of nucleons (each of which has a mass of about 1 amu), nor is there any special reason there should be.
If you mean "whole number" instead, it's because the nucleons have a mass of about 1 amu each, not precisely 1 amu each, with the neutrons being slightly more massive than the protons. The electrons make a (very small) contribution as well.
Finally, any given element may be a mixture of isotopes, and even if the isotopes individually did happen to have a whole number mass, the mixture wouldn't. Chlorine, for example, is about 3/4 35Cl and 1/4 37Cl, so it comes out to have an average Atomic Mass of roughly 35.5.
What else can I help you with?
Is 2601 divisble by 2?
no u cant divide anything but 2 if the number isnt even
Is Lindsay Lohan a Christian?
No she isnt, if you notice, she even is a lesbian, which proves that she isnt, specially when she curses, and has even got arrested. But she should be.
A number that isnt a prime number?
Composite
What of a number is infinite?
There isnt
What is a number called when it isnt a prime number?
Composite
Is dinosaurous an animal?
it isnt even a word.
How many electrons does each neutral chromium atom have?
24 electrons, remember the atomic number of an element tells you how many protons it has. The number of protons = the number of electrons (if the atom isnt charged)
How Ellen Ochoa invention's impact on our lives today?
well ellen ocho can influence nd wll always be rememdered even though she isnt died
Where can you buy cute bags?
u can always find some good deals in goodwill, or even on the on-line sources, like Ruelala.com! also check in thrift stores!! brand isnt always everything!!
Why is it healthy?
no it isnt, you dont even know what "it" is. k?
What is a number that can not be turned into a fracion?
there isnt one
Is Miranda a illegal immagrant?
yes and she always will be (jk she isnt)
