Structure of Atoms

What is the basic structure of an atom?

• Nucleus containing protons and electrons, with neutrons orbiting around the nucleus

• Nucleus containing protons and neutrons, with electrons orbiting around the nucleus

• Nucleus containing protons and electrons, with neutrons and electrons orbiting around the nucleus

• Nucleus containing electrons and neutrons, with protons orbiting around the nucleus

What are the three subatomic particles and their respective charges?

• Protons, neutrons, and electrons with respective charges +1, -1, and 0

• Electrons, protons, and photons with respective charges -1, +1, and 0

• Neutrons, positrons, and electrons with respective charges 0, +1, and -1

• Protons, neutrons, and electrons with respective charges +1, 0, and -1

Explain the concept of electron configuration.

• The process of arranging protons and neutrons in an atom

• The arrangement of electrons in an atom, represented by a series of numbers and letters that describe the energy levels and sublevels where the electrons are located.

• The measurement of the distance between electrons in an atom

• The study of electron movement within an atom

What is the atomic number of an element?

• The atomic number of an element is the number of neutrons in the nucleus of an atom.

• The atomic number of an element is the number of electrons in the nucleus of an atom.

• The atomic number of an element is the number of molecules in the nucleus of an atom.

• The atomic number of an element is the number of protons in the nucleus of an atom.

How many protons are present in an atom with atomic number 20?

• 10

• 15

• 20

• 30

If an atom has 10 electrons and 12 neutrons, what is its atomic number?

• 12

• 10

• 10

• 22

What is the significance of the atomic number in determining the identity of an element?

• It determines the number of protons in the nucleus of an atom.

• It determines the number of isotopes in the nucleus of an atom.

• It determines the number of neutrons in the nucleus of an atom.

• It determines the number of electrons in the nucleus of an atom.

Describe the role of electrons in determining the chemical properties of an element.

• Electrons determine the chemical properties of an element by their color

• Electrons determine the chemical properties of an element by their temperature

• Electrons determine the chemical properties of an element by their arrangement in the outer energy levels.

• Electrons determine the chemical properties of an element by their mass

How does the number of protons in an atom affect its atomic number?

• It determines the atomic number.

• It determines the atomic mass

• It changes the chemical properties of the atom

• It has no effect on the atomic number

Explain the relationship between the number of protons and electrons in a neutral atom.

• The number of protons and electrons in a neutral atom is the same.

• The number of electrons is greater than the number of protons in a neutral atom.

• The number of protons and electrons in a neutral atom is always different.

• The number of protons is greater than the number of electrons in a neutral atom.