An element is a composition of many atoms. Thus you can hold NaCl (salt) in your hand. You can't hold the atoms it makes up.
The number of protons. This is given by the atomic number.
A Compound
chemical bond
The number of electrons and neutrons may differ for atoms of the same element. However, what distinguishes atoms of one element from those of a different element is the number of protons in the atom's nucleus. All of the atoms of an element have the same number of protons, which is the single most important determiner of the properties of an element.
Elements are defined by the number of protons contained in the nucleus of their atoms. The number of electrons (the same as protons in neutral atoms) determine an elements chemical interactios with other elements. The number of neutrons (which can vary) determines an element's mass and relative stability.
An element is a composition of many atoms. Thus you can hold NaCl (salt) in your hand. You can't hold the atoms it makes up.
number of protons
By number of protons/electrons.
Atoms of the same element may differ from one another by having differing numbers of Neutrons in their centres.
Elements contain only one type of atom, where as compounds are made up of different types of atoms.
Fusion
Monosaccharides differ from one another in the following ways: The number of carbon atoms they contain. The orientations of their hydroxyl group. The location of their carbonyl group.
The number of protons. This is given by the atomic number.
A Compound
false
Isotopes of one particular element (atom) only differ in mass and stability (decay), not in chemical properties.
Their atomic number differ by 1. It is applicable for elements located next to one another.