Quiz

QUIZ

1. What is the first orbital filled at every level?

a. s b. p c. d d. f

Answer: a. The s orbital, and the only orbital in a hydrogen or helium atom, is the first orbital filled. This is a spherical orbital and is at the lowest energy level.

2. Which is not an orbital name in understanding the orbitals around atomic nuclei?

a. p b. d

c. e d. f

Answer: c. The orbitals in the atoms that have been discovered thus far only go up to the following, in order: s, p, d, and f. There is no e orbital.

3. What charge is seen on an electron that has an up-spin?

a. +1 b. -1 c. +1/2 d. -1/2

Answer: c. An up-spin for an electron is a spin of +1/2, while a downspin electron has a spin of -1/2.

4. According to the Pauli Exclusion Principle, what must be the case?

a. Electrons must be in the lowest energy state possible. b. Electrons must fill the p orbitals first c. Electrons will stay at closest to the nucleus as possible. d. Two electrons in the same sub-orbital cannot have the same spin.

Answer: d. According to the Pauli Exclusion Principle, electrons cannot have the same spin if they are to be in the same sub-orbital.

5. What type of element is seen in the d-block on the periodic table?

a. Alkali metal b. Transitional metal c. Halogen d. Noble gas

Answer: b. The transitional metals are in the d-block because they fill up the d orbitals of a lower energy class than they do of the p orbitals. For example, the 3d orbitals get filled after the 4s orbitals but before the 4 p orbitals. It’s all about the energy level of the orbital.

6. Which period has the higher energy d-orbital type in it?

a. First period b. Second period c. Third period d. Fourth period

Answer: d. The fourth period starts the d block elements, which are technically thought of as being a higher energy orbital.

7. Which atom has the highest electron affinity among other atoms?

a. Fluorine b. Chlorine c. Bromine d. Potassium

Answer: b. Chlorine has the highest electron affinity among the other atoms, even though it isn’t in the top right-hand corner of the periodic table, which is the natural trend of electron affinity.

8. Which group has the greatest electron affinity among the elements?

a. Group 15 b. Group 1 c. Group 18 d. Group 17

Answer: d. The group that has the greatest affinity for an electron is group 17 because they need that extra electron to fill their orbitals.

9. What kind of bonding is seen when there are two atoms of the same type bonded together?

a. Hydrogen bonding b. Covalent bonding c. Ionic bonding d. Pure covalent bonding

Answer: d. When there is a bond between the atoms and the two atoms are identical, this is called pure covalent bonding.

10. What kind of bonding is seen when there is one atom that is highly electronegative and one that is not very electronegative?

a. Hydrogen bonding b. Covalent bonding c. Ionic bonding d. Pure covalent bonding

Answer: c. Ionic bonding is seen when an atom is highly electronegative and bonds with another atom that is not very electronegative.