Post Utme Abia State University Chemistry Past Questions and Answers

Question 16:

If an atom is represented as \(2311 \mathrm{x}\), which of the following deduction is correct?

A. It contain 12 protons
B. It forms a covalent chloride
C. Its atomic number is 23
D. It is an alkall metal

Question 17:

If the relevant molecular mass of an element is not a whole number, it can be deduced that the element is ____________

A. Naturally radioactive
B. Abundant in nature
C. A transition metal
D. An isotopic mixture

Question 18:

Cathode fays cause an object placed behind a perforated anode to cast a shadow on the screen. that the rays

A. Are positively charged
B. Are negatively charged
C. Have mass
D. Travel in straight lives

Question 19:

Which quantum number divides shells into orbital?

A. Principal
B. Azimuthal
C. Magnetic
D. Spin

Question 20:

The type of bonding in \(\left\{\mathrm{Cu}\left(\mathrm{NH}_{3} \right)_{4} \right\}^{2+}\) is

A. Coordinate
B. Electrovalent
C. Metallic
D. Covalent