Atomic structure and bonding - Jamb Chemistry Past Questions and Answers

Question 181:

• JAMB 2015

S block elements of the periodic table one made up of

A. Groups 1, 2, 3
B. Groups 1, and 2
C. Group 3
D. Group 3 to 7

Question 182:

• JAMB 2016

The relative atomic mass of a naturally occurring lithium consisting of 90%\(\frac{7}{3}\)Li and 10%\(\frac{6}{3}\)Li is

A. 6.2
B. 6.8
C. 7.1
D. 6.9

Question 183:

• JAMB 2016

The radioisotope used in industrial radiography for the rapid checking of faults in welds and casting is

A. Phosphorus-32
B. Cobalt-60
C. Carbon-14
D. Iodine-131

Question 184:

• JAMB 2016

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

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

Question 185:

• JAMB 2016

The arrangement of particles in crystal lattices can be studied using

A. X-rays
B. \(\beta\)-rays
C. \(\alpha\)-rays
D. \(\gamma\)-rays