Chemistry Worksheet

List the orbitals (s, p, d, f) that are found in the 3rd energy level _____________. How many electrons can they all hold? _____________

• The orbitals found in the 3rd energy level are s, p, and d. They can hold a total of 18 electrons.

• The orbitals found in the 3rd energy level are s, p, d, and f. They can hold a total of 32 electrons.

• The orbitals found in the 3rd energy level are s and p only. They can hold a total of 8 electrons.

• The orbitals found in the 3rd energy level are s, p, and d. They can hold a total of 20 electrons.

Objective 2: Classify the components of the periodic table. Directions: Match each of the following terms with a number or chemical symbol from the periodic table below.

• 5

• A p-block element that is not a metalloid

• 1

• An s-block element

• 2

• Noble gases

• 3

• A d-block element

• 4

• Halogens

Write the correct number of valence electrons for each of the elements below. Element: Al, H, Kr, Si, Fr, Ca, N, Cl. Valence electrons: ____________

• Valence electrons for Al: 3, H: 1, Kr: 8, Si: 4, Fr: 1, Ca: 2, N: 5, Cl: 7

• Valence electrons for Al: 3, H: 1, Kr: 10, Si: 4, Fr: 1, Ca: 2, N: 5, Cl: 7

• Valence electrons for Al: 5, H: 1, Kr: 8, Si: 6, Fr: 1, Ca: 2, N: 5, Cl: 7

• Valence electrons for Al: 3, H: 2, Kr: 8, Si: 4, Fr: 2, Ca: 2, N: 5, Cl: 7

Objective 4: Infer the atomic size, reactivity, electronegativity, and ionization energy of an element from its position on the periodic table. 1. Place in order of increasing radius: Calcium (Ca), Barium (Ba), Magnesium (Mg)

• Mg, Ca, Ba

• Ca, Mg, Ba

• Ba, Ca, Mg

• Mg, Ba, Ca

Objective 4: Infer the atomic size, reactivity, electronegativity, and ionization energy of an element from its position on the periodic table. Place in order of increasing ionization energy: Vanadium (V), Iron (Fe), Scandium (Sc).

• Vanadium, Scandium, Iron

• Scandium, Vanadium, Iron

• Iron, Vanadium, Scandium

• Iron, Scandium, Vanadium

Rank the following by increasing electronegativity: Cesium (Cs), Fluorine (F), Phosphorus (P)

• Cesium, Phosphorus, Fluorine

• Cesium, Fluorine, Phosphorus

• Phosphorus, Cesium, Fluorine

• Fluorine, Phosphorus, Cesium

4. Identify the more reactive metal: Al or Cs.

• Al

• Cs

Circle the more reactive nonmetal. Choose one of the following: N or C.

• N

• C

Which element is in group 2 and period 4?

• Calcium

• Magnesium

• Strontium

• Barium

Which element is in group 18 and period 5?

• Xenon

• Krypton

• Radon

• Helium