One atom must be one and only one element (radioactivity allows an atom to change from one element into another, but it can still only be one element at a time). One element can have any number of atoms, though certain combinations are common: all of the elements that are gases at room temperature (that aren't noble gases) exist as diatomic molecules.
Some elements have isotopes - atoms with a different number of neutrons.
The number of atoms in an element depends on the element's atomic mass and the amount of the element present. One mole of an element contains approximately 6.022 x 10^23 atoms, known as Avogadro's number.
The element platinum has only one atom.
One atom; actinium is an element, not a molecule.
Xenon has 54 atoms, as it is a chemical element with atomic number 54.
The chemical formula shows you this. The subscripted number next to each element shows how many atoms are present in a molecule or formula unit. If no number is shown, then only one atom of that element is present.
An atom is a particle the smallest of an element. An element is a substance made up of many atoms of ONE kind (or molecules consisting of two or more identic atoms)
In one molecule of CO2, there is one atom of carbon and two atoms of oxygen.
The element phosphorus has 15 atoms, as indicated by its atomic number on the periodic table.
An atom is a particle the smallest of an element. An element is a substance made up of many atoms of ONE kind (or molecules consisting of two or more identic atoms)
It is composed of one type of atoms: Zinc atoms. That is, by definition, an element.
Sodium is an element- you just need one atom. Its a trick question