Atomic Structure

Question 1

In the current understanding of atomic theory (true or false):

Gluons hold the positively charged particles of the nucleus together

Answer 1

True

Question 2

In the current understanding of atomic theory (true or false):

Neutrons are made up of quarks

Answer 2

True

Question 3

In the current understanding of atomic theory (true or false):

Photons are relatively heavy, positively charged particles

Answer 3

False. Photons have no mass and carry no charge. They mediate the electromagnetic force between other electrically charged subatomic particles.

Question 4

In the current understanding of atomic theory (true or false):

Electrons display behaviours characteristic of both particles and waves

Answer 4

True

Question 5

In the current understanding of atomic theory (true or false):

When an electron drops to a lower energy orbital, a photon is emitted

Answer 5

True

Question 6

In the current understanding of atomic theory (true or false):

A. The number of electrons orbiting the nucleus determines an element’s atomic number
B. Elements with atomic numbers 3,4,5 and 6 are in the same row of the periodic table
C. The arrangement of electrons in the outer orbitals determines how an atom will react with another atom
D. The first element in the modern periodic table is helium
E. The atomic weight of an isotope is equal to the number of protons plus the number of neutrons in its nucleus

Answer 6

False. The atomic number is equal to the number of protons in the nucleus.

Question 7

In the current understanding of atomic theory (true or false):

A. The number of electrons orbiting the nucleus determines an element’s atomic number
B. Elements with atomic numbers 3,4,5 and 6 are in the same row of the periodic table
C. The arrangement of electrons in the outer orbitals determines how an atom will react with another atom
D. The first element in the modern periodic table is helium
E. The atomic weight of an isotope is equal to the number of protons plus the number of neutrons in its nucleus

Answer 7

True

Question 8

In the current understanding of atomic theory (true or false):

A. The number of electrons orbiting the nucleus determines an element’s atomic number
B. Elements with atomic numbers 3,4,5 and 6 are in the same row of the periodic table
C. The arrangement of electrons in the outer orbitals determines how an atom will react with another atom
D. The first element in the modern periodic table is helium
E. The atomic weight of an isotope is equal to the number of protons plus the number of neutrons in its nucleus

Answer 8

True

Question 9

In the current understanding of atomic theory (true or false):

A. The number of electrons orbiting the nucleus determines an element’s atomic number
B. Elements with atomic numbers 3,4,5 and 6 are in the same row of the periodic table
C. The arrangement of electrons in the outer orbitals determines how an atom will react with another atom
D. The first element in the modern periodic table is helium
E. The atomic weight of an isotope is equal to the number of protons plus the number of neutrons in its nucleus

Answer 9

False. Hydrogen (atomic number 1) is the first element in the periodic table.

Question 10

In the current understanding of atomic theory (true or false):

A. The number of electrons orbiting the nucleus determines an element’s atomic number
B. Elements with atomic numbers 3,4,5 and 6 are in the same row of the periodic table
C. The arrangement of electrons in the outer orbitals determines how an atom will react with another atom
D. The first element in the modern periodic table is helium
E. The atomic weight of an isotope is equal to the number of protons plus the number of neutrons in its nucleus

Answer 10

True