Which of the following statement is true based on Heisenberg’s Uncertainty Principle?

• the electrons are found in a definite location around the nucleus

• the electrons move in known speed and location around the nucleus

• it is impossible to locate the exact location and momentum of electrons

• the electrons move at a specific speed, but the location cannot be determined

The exact location of an electron cannot be determined but the probable location can be determined which is define by __________________.

• Probability mass

• Probability density

• Probability cloud

• Probability location

What set of values is used to define the probable location of the electron?

• Heisenberg numbers

• Location numbers

• Atomic numbers

• Quantum numbers

Which of the following symbols does not belong to the group?

• n

• m

• l

• m_l

What principle states that there should be no two electrons in an atom can have the same set of four quantum numbers?

• Hund’s Rule

• Aufbau Principle

• Pauli Exclusion Principle

• Heisenberg’s Uncertainty Principle

What is the designation for the subshell with n=5 and l=1?

• 5d

• 5f

• 5p

• 5s

If a subshell has 3 orbitals, what are the values for each of these orbitals?

• -1, 0, 1

• 0, 1, 2, 3, 4

• -2, -1, 0, 1, 2

• -3, -2, -1, 0, 1, 2, 3

Given the electron configuration of Phosphorus, 1s²2s²2p⁶3s²3p³, how many unpaired electrons does this atom possess?

• one

• two

• three

• four

Tags

NGSS.HS-PS1-1

What is the correct electron configuration of Gallium, Ga?

• 1s²2s²2p⁶3s²3p⁶3d¹⁰4s²4p¹

• 1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p¹

• 1s²2s²2p⁶3s²3p²3d¹⁴4s²4p¹

• 1s²2s²2p⁸3s²3p⁸3d⁸4s²4p¹

Tags

NGSS.HS-PS1-1

Which of the following quantum numbers is associated with the orientation of atomic orbital?

• Principal quantum number

• Azimuthal quantum number

• Magnetic quantum number

• Spin quantum number