The atom you know
The middle of an atom
What is the nucleus?
physical stuf
Positively charged
What is protons?
Orbits the nucleus
What are electrons?
Lithium has an atomic number of 3 and an atomic mass of 7. Therefore, there are (____) neutrons.
There are 4 neutrons
There's an element on the periodic table with the atomic number of 4. What is this element?
What is Beryllium?