Copper has 29 protons and 29 electrons, corresponding to its atomic number of 29 on the periodic table. Copper also has 35 neutrons. It has an atomic mass of 63.546 atomic mass units and is grouped in the transition meta... More »

One atom of aluminum has 13 protons and 14 neutrons. Protons are the positively charged particles in an atom, while neutrons are subatomic particles that have no charge. More »

The element fluorine has 9 protons and 9 electrons. It is element number 9 on the periodic table and has a molar mass of 18.9 grams/moles. More »

To find the number of electrons an element has, locate it on the periodic table of elements, find the atomic number, and note the number of protons; because atoms are naturally electrically neutral, the protons and elect... More »

Moving across periods on the periodic table from left to right, the atoms tend decrease in radius size because each atom has more protons than the atom before it, meaning there is more of an attractive force in the nucle... More »

The protons, neutrons and electrons present in an ion are determined from a periodic table. The atomic number represents the protons in an element. The atomic mass minus the atomic number represents the neutrons. In a ne... More » Science Chemistry Atoms & Molecules

Atoms are neutral because they have same number of positively charged particles, protons, and negatively charged particles, electrons. The amount of charge in a single proton is equal to the amount of charge possessed by... More »