Atomic structure and bonding - Jamb Chemistry Past Questions and Answers

Question 191:

• JAMB 2017

If 100cm³ of oxygen pass through a porous plug is 50 seconds, the time taken for the same volume of hydrogen to pass through the same porous plug is? [O = 16, H = 1]

A. 10.0s
B. 12.5s
C. 17.7s
D. 32.0s

Question 192:

• JAMB 2018

The type of bonding in [Cu(NH\(_3\))\(^4\)]\(^{2+}\) is

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

Question 193:

• JAMB 2018

Which of the following statements is correct about the periodic table?

A. Elements in the same period have the same number of valence electrons
B. The valence electrons of the elements in the same period increase progressively across the period
C. Elements in the same group have the same number of electron shells
D. The non-metallic Properties of the elements tend to decrease across each period

Question 194:

• JAMB 2018

The periodic classification is an arrangement of the elements

A. Atomic weights
B. Isotopic weights
C. Molecular weights
D. Atomic numbers

Question 195:

• JAMB 2018

The number of electrons in the valence shell of an element of atomic number 14 is?

A. 1
B. 2
C. 3
D. 4