Question

Ideas of the atom have changed over time.

Which idea do scientists now consider inaccurate?
Electrons have a negative charge.
Electrons are arranged in layers.
O
An atom is solid material.
O
The nucleus is the center of the atom.

Answer 1

An atom is a solid material.

Explanation : Atomic theory depicts how atom has changed over time. The first atomic model theory was given by JJ Thomson in the year 1904. An atom as a solid material is now believed as imprecise by the scientists. It is believed that an atom has a nucleus that is located at its center surrounding to which are the orbits where electrons are present.

Electrons are negatively charged particle. The nucleus has protons (positively charged) and neutrons (negatively charged) in it.

Answer 2

An atom is solid material.

Step-by-step explanation:

The state of matter of an atom is neither solid, liquid nor gases. Matter is an aggregate of atoms which exists in physical states of solid, liquid or gases.

This idea of an atom is inacurate and widely regarded as inconsistent.

The other options are correct assumptions of an atom.

Electrons are subatomic particles that carries negative charges on them.

Electrons orbits the nucleus which is the center of an atom in discrete layers called orbitals.