the smallest particle of element that retains the chemical identity of that element is a/an?

Answer 1

A molecule is a safer term.
Since atomic form of elements like chlorine, oxygen exhibit radically different properties, its the moleculewhich is the smallest particle possessing all the properties of the element.

For monoatomic elements like noble gases, metals etc. too the term molecule is valid.

Answer 2

Som is right. Atoms, although smaller than molecules (unless it is a monoatomic element), take part in chemical reactions. But it is the molecules that actually possess all the physical and chemical properties.

Answer 3

Som is NOT right. A compound is made of 2 or more atoms of either the same element (H2) or different elements (H2O). The correct answer is atom.

Answer 4

Non of the above. in case you prefer to get technical approximately this then you incredibly may well be going to sub atomic debris, that are additionally called quarks, or maybe smaller than that there are scientists who communicate approximately string theory. i think of your checklist is non sceintific sence. yet based on the element there are some names of quarks that have comparable names to factors.

Answer 5

An atom

Answer 6

An atom.

Answer 7

atom