Number of protons.
An element is made by atoms. smallest part of element is atom.
The smallest part of an element is one atom of that element. However an element does not exhibit its bulk properties until there are on the order of 1000 atoms of that element together.
The smallest unit of an element that is still that element is an atom. Some elements normally exist as molecules, but under some circumstances these can be broken down to individual atoms.
No. This is a definition of an atom. Electrons are only part of atoms.
Do you mean number of protons in a nucleus? The nucleus is part of an atom.
This is typically referred to as one atom. However to retain the bulk properties of the element you must have several hundred atoms.
The smallest part of an element that still retains its properties is an atom.
The smallest part of an element that has the properties of that element is the atom.
When an atom of one element is brought in contact with an atom of another element, electrons get transferred from one element to another. However, if the atoms of same element come together then electrons are shared and not transferred. Exception to this is elements in noble gases.
The number of valence electrons an element atom contains will determine its chemical properties.
Protons (the number of ..) determine the 'kind' of element,and the electrons in the outmost valency orbital determine the properties(the number of electron; and 'octet' rule: "make it eight preferably').
If the pure substance is not an element, the smallest part is a molecule (which is made of atoms) for instance, pure water is made of water molecules, which are made of 2 hydrogen atoms and 1 oxygen atom If the pure substance is an element, the smallest part is an atom. (which is made of Protons, Neutrons, and Electrons) Pure hydrogen is made of atoms. A stable hydrogen atom has 1 proton, 1 neutron, and 1 electron. Protons and Neutrons can be broken down further into Quarks, Leptons, and Bosons. The Electron is a type of Lepton.