What is the mass of an atom that contains two positively charged nuclides, and two neutrally charged nuclides? What is the atom?

The element is characterized by its $"atomic number, Z"$, where $Z$ is the number of nuclear protons, which are massive, positively charged particles. Now we were given the number of...

are distinguished by the number of protons in their nucleus. This number is called the , and for Oxygen, it is $8$. Thus, any atom of Oxygen, whether positive...

And the number of protons in the nucleus defines $Z$, the , which specifies the identity of the element. I have written before that the sign of the charge of...

And announce that I have discovered $"antimatter"$. The proposition you are making is hard to rationalize. What's an atom? As far as anyone knows, it's a collection of fundamental particles,...

If it is a neutral atom (and we must assume so), for every electron there must be a positively charged nuclear proton. Thus $Z," the atomic number = 30"$. And...

You might have to rethink this question. All states of matter, $"solids, liquids, and gases,"$ are composed of atoms, which in turn are composed of positively and neutrally charged, massive...

For the lithium atom, $Z=3$; there are 3 positive, nuclear charges. There are 3 extra-nuclear electronic charges, i.e. borne by the 3 electrons, in the neutral atom. Lithium generally loses...

Protons, massive, positively charged nuclear particles, have an opposite electronic charge to electrons, extra-nuclear particles of negligible mass. The positive/negative charge convention is entirely arbitrary. The point is that...

In fact, Thomson's first "guess" was that the bulk of the atom was a positively-charged ball of fluid-like matter, with just enough positive charge to cancel the negative charge on...

And in each water molecule, i.e. $""^1H_2""^16O$, where we treat the water molecule as AN ISOTOPOMER than contains $"8 neutrons"$, clearly there are $8*mol$ of neutrons. And a mole,...