1.4 - Modern Atomic Theory(Gen Ed)

Who proposed the quantum mechanical model of the atom in 1926?

• Niels Bohr

• Albert Einstein

• Erwin Schrödinger

• Isaac Newton

What does the quantum mechanical model describe?

• The exact path of electrons

• The behavior of the electron in a hydrogen atom

• The color of electrons

• The size of the nucleus

What is an atomic orbital?

• A fixed path of an electron

• A region of space with a high probability of finding an electron

• The nucleus of an atom

• A type of chemical bond

What does the electron cloud model represent?

• The exact position of electrons

• The probable locations of electrons

• The color of the atom

• The size of the atom

What is the shell model of the atom?

• A model describing the nucleus of the atom

• A simplified version of the quantum mechanical model

• A model explaining the chemical reactions of atoms

• A model focusing on the atomic mass

What does each principal energy level have in the shell model?

• The same number of electrons

• Different number of sublevels or subshells

• Identical energy levels

• No sublevels or subshells

What is the relationship between the principal energy shell number and its distance from the nucleus?

• The number decreases as the distance increases

• The number remains constant regardless of distance

• The number increases as the distance increases

• The number is unrelated to the distance

How many electrons can each energy shell hold according to the formula 2n²?

• 2, 8, 18, 32

• 2, 4, 8, 16

• 1, 4, 9, 16

• 2, 6, 12, 20

Which subshell has the highest number of orbitals?

• s

• p

• d

• f

What is the shape of an s orbital?

• Spherical

• Dumbbell-shaped

• Cloverleaf

• Complex