Pre-IB Chemistry Mid-term

The box for an element from the periodic table is shown. Which is the atomic mass?

• A

• C

• B

• D

Which element has 14 protons?

• Nitrogen

• Silicon

• Aluminum

• Sulfur

Which is the correct number of valence electrons in the element Gallium (Ga)?

• 1

• 2

• 3

• 4

Which is the correct number of valence electrons in the element Sulfur (S)?

• A - 16

• B - 6

• C - 2

• D - 4

Which region is referred to as the p-block on the diagram?

• A

• B

• C

• D

Which correctly describes elements in the same group?

• They have the same number of valence electrons.

• They have electrons in the same outermost energy level.

• They have the same atomic radius.

• They must be in the same state of matter.

Which property describes how much energy must be added to an atom to remove an outermost electron?

• electronegativity

• ionization energy

• ionic radius

• atomic radius

Which is the correct formula for the compound Chromium (II) Nitrate?

• CrNO2

• Cr(NO3)2

• (Cr)2NO3

• Cr2NO3

How many single covalent bonds are elements in Column F likely to form?

• 1

• 2

• 3

• 4

Which type of molecular shape is shown by this molecule?

• trigonal pyramidal

• tetrahedral

• bent

• trigonal planar