Which of the following is true abount an individual atom? *Jusitfy your choice and the choiecs you didnt pick?

Question

a.an individual atom should be considered solid

b. an individual atom should be considered liquid

c. an individual atom should be considered gas

d. the state of the atom depends on which element it is

e. an individual atom cant be considered to be a solid, liquid, or gas

Answer 1

e. It can't be considered a solid, liquid, or gas.

State of matter depends upon an atom's (or molecule's) interaction with the other atoms around it.  If the atom is bound to others in a crystal structure, it is a solid, but if no others are present to bond with, it cannot be solid.  Liquids also depend upon interatomic/intermolecular forces, and thus cannot be defined for a single atom.  Gases do not depend upon such interactions, but the properties of gases, such as random motion of particles, depend upon having many particles, so a single atom cannot be a gas.  When you have a bunch of atoms, the state that will be assumed at a given temperature and pressure depends upon the element, but this is irrelevant for single atoms.