Number of protons and therefore also the number of electrons make them chemically different.
The number of neutrons makes difference in also mass and particular in nuclear behaviour and stability but not in chemical change.
Each element has a different number of neutrons.
The previous element in the periodic system (by ordered atom number) has ONE proton and one electron LESS per atom
This element is magnesium (Mg).
Oxygen is the element that makes up 78% of air and belongs to the 15th group in the periodic table.
Not closely. Although it is grouped with the chalcogens in the periodic table it is much more electronegative than the others which makes its chemistry different.
Gallium... I think that's right, it makes sence and its on the periodic table.
Ti, or Titanium. Element # 22 in the periodic table of elements.
non metals
non metals
The number of protons in the nucleus or the number of electrons surrounding the nucleus. This number is also called atomic number of the element.
The atoms of each element have a number of protons that is unique to each element. The number of protons makes one atom different from another.
Carbon