3. Basic Chemistry: The Electronic Structure of Atoms

which of the following quantum number have both positive and negative values?

• spin quantum number (s)
• orbital quantum number (l)
• magnetic quantum number (m)
• angular momentum quantum number (l)
• principal quantum number (n)

what is the maximum number of electrons in one orbital?

• 5
• 2
• 4
• 10

• 6

In orbital 2p³, the subshell value is .........................

• s
• d
• f
• g
• p

In orbital 2p³, the shell value is .........................

• 6
• 2
• 5
• 4
• 3

The size and energy of the orbital is given by what quantum number?

• Principal quantum number

• The angular momentum quantum number

• The magnetic quantum number

• Spin quantum number

• None of these

Shape of the orbital is given by what quantum number?

• Principal quantum number (n)
• The angular momentum quantum number (l)

• Magnetic quantum number (m)
• Energy quantum number
• Spin quantum number (s)

In the ground state of the atoms, the orbital's are filled with electrons in the .................... order of energies.

• parallel

• reverse
• random
• increasing
• decreasing

The angular momentum quantum number is given by which formula?

• n²

• 0 to (n-1)

• 2n²

What statement is correct about this orbital diagram?

• The orbital diagram shows the arrangement of protons in an atom
• There is nothing incorrect with this diagram

• In the 2p box there should only be 1 electron in the first 2p box and one in the second 2p box

• Both arrows in the first 2p box should be pointing up

• It illustrates the movement of electrons between orbitals

This model was developed after J.J. Thompson discovered electrons, a particle smaller than an atom. It shows electrons floating freely in a positive region.

• Dalton's model of the atom

• Plum Pudding Model
• The "Rutherford Model" of the atom

• The "Quantum Mechanical Model" of the atom

• Bohr's atomic model