quantum model

If the first and second energy levels of an atom are full, then what would be the total number of electrons in the atom?

• 6

• 8

• 10

• 18

Which of the following sub-levels is correctly designated?

• 1p⁵

• 3f⁹

• 2p⁶

• 3d¹¹

Each sub level has its maximum number of orbitals. How many orbitals are in the third principal energy level?

• 3

• 6

• 9

• 12

Which of the following main energy levels of an atom can accommodate a maximum of 18 electrons?

• 1^st energy level

• 2^nd energy level

• 3^rd energy level

• 4^th energy level

What model of the atom replaced Bohr's model?

• Heisenberg's model

• Thomson's model

• Rutherford's model

• Quantum Mechanical model

Regions in which electrons are likely to be found is called

• atomic orbitals

• principal energy level

• energy sublevel

• spin

What atom matches this electron configuration? 1s²2s²2p⁶3s²3p⁶4s²3d¹⁰?

• ₃₀Zn

• ₂₉Cu

• ₂₆Fe

• ₄₀Zr

What is the electron configuration for a Sulfur atom (₁₆S) ?

• 1s² 2s² 2p⁶ 3p⁶

• 1s² 2s² 2p⁶ 3s²3p⁶

• 1s² 2s² 2p⁶ 3s²3p⁴

• 1s² 2s² 2p⁶ 3s²3d⁶

The electron configuration of an atom is 1s²2s²2p⁶. The number of valence electrons in the atom is

• 6

• 8

• 2

• 10

In which period of the periodic table of elements would you find ₂₆Fe with an electron configuration of 1s²2s²2p⁶3s²3p⁶4s²3d⁶,

• 3

• 4

• 5

• 6