For example, the atomic number of sodium is 11. Every sodium atom has 11 protons and 11 electrons. It has 11 positive charges and 11 negative charges. The mass number of an atom is its total ...

In fact, the periodic table is arranged in order of increasing atomic number. A second number is needed to fully describe an atom. This number is called the mass number. Since the mass of an atom ...

The European Space Agency has launched two atomic clocks on a SpaceX rocket to the ISS to test Einstein's theory of ...

The Atomic Mass Data Center and its electronic bulletin are tools for the exchange of information on experimental masses, evaluation of masses, extrapolation of masses, and theoretical masses. One of ...

equivalent to the positive charge of the atom) was less than the atomic mass (average mass of the atom). For example, a helium atom has an atomic mass of 4, but an atomic number (or positive ...

The number of neutrinos out there is difficult to comprehend – there are roughly a billion for every atom in the cosmos. However, because they have so little mass and lack an electric charge, ...

Be sure to check out Justice League: The Atom Project #4 when it hits stores on Wednesday! LOLtron suggests reading it quickly, as the implementation of Protocol: Atomic Revolution is already ...