Which statement about an atom is correct?(1 point)
The proton has no charge and is found in the nucleus.
The neutron has a negative charge and is found in the nucleus.
The electron has a negative charge and is found outside of the nucleus.
The neutron has no charge and is found outside of the nucleus.
The electron has a negative charge and is found outside of the nucleus.
Cobalt has a mass number of 59 and an atomic number of 27. A student wants to create a model of a cobalt atom. Which statement about the model is correct?(1 point)
Responses
The model should show 27 protons and 32 neutrons.
The model should show 27 protons and 32 neutrons.
The model should show 27 protons and 27 neutrons.
The model should show 27 protons and 27 neutrons.
The model should show 32 protons and 59 neutrons.
The model should show 32 protons and 59 neutrons.
The model should show 59 protons and 27 neutrons.
The model should show 27 protons and 32 neutrons.
In a molecule of lithium sulfide, there are two atoms of lithium and one atom of sulfur. Which statement about lithium sulfide is correct?(1 point)
Responses
Both lithium and sulfur form positive ions.
Both lithium and sulfur form positive ions.
A molecular model of lithium sulfide would have two spheres.
A molecular model of lithium sulfide would have two spheres.
The atoms in lithium sulfide are held together by bonds.
The atoms in lithium sulfide are held together by bonds.
The chemical formula for lithium sulfide is LiS2.
The atoms in lithium sulfide are held together by bonds.
The correct statement about an atom is:
The electron has a negative charge and is found outside of the nucleus.
The correct statement about an atom is:
The electron has a negative charge and is found outside of the nucleus.
To determine the correct statement, we need to understand the basic structure of an atom.
An atom is composed of three main subatomic particles: protons, neutrons, and electrons.
- Protons are positively charged particles found in the nucleus, which is located at the center of an atom. They have a positive charge of +1.
- Neutrons are neutral particles, meaning they have no charge. Like protons, neutrons are also found in the nucleus.
- Electrons are negatively charged particles that orbit around the nucleus in specific energy levels or shells. Electrons have a negative charge of -1.
Given this information, we can determine that the statement stating "The electron has a negative charge and is found outside of the nucleus" is correct.