CHE 022 LABORATORY EXAM

STUDENT NAME (LAST, GIVEN M.I)

The distribution of electrons in the different orbitals in an atom is shown by?

• electron configuration only
• orbital diagram only
• both electron configuration and orbital diagram
• none of the above

What orbital is being represented on the illustration below?

• s orbital
• p orbital
• d orbital
• f orbital

Which element is being represented by the orbital diagram below?

• potassium
• aluminum
• magnesium
• sulfur

What is the chemical name of GaAs?

• Gallium arsenide
• Gallium arsenic
• Gallium monoarsenide
• Gallium monoarsenic

What is the chemical formula of potassium bromide?

• KB

• KBr

• KBro

• KBrn

Which of the following compound is not matched according to what it is used for?

• NaCl – treat or prevent sodium loss due to dehydration
• KI – protects the thyroid gland from possible injury by unreactive iodine
• NaF – used as an insecticide
• CaCO3 – a dietary supplement

What is the chemical formula of Perchloric Acid?

• HClO4

• HClO3

• HClO2

• HClO

What is the chemical formula of Tetrathionic acid?

• H2S4O6

• H2SO4

• H2S2O3

• H2SO3

What is the chemical formula of Trisilicon tetranitride?

• Si3N4

• Si4N3

• Si3N

• SiN4