In Fig. 1.16, identify the trends in the first ionization energies of the elements in 

(a) Descending group 1,

(b) Descending group 13, 

(c) Crossing the first row of the d-block, 

(d) Crossing the row of elements from B to Ne, 

(e) Going from Xe to Cs, 

(f ) Going from P to S. 

Rationalize each of the trends you have described.

Figure 1.16

Transcribed Image Text:

First ionization energy, IE,/kJ mol 2500 He 2000- 1500- 1000- 500- H Li B Mg Na 10 Al 20 Zr As 30 Kr Se Rb T 40 Cd In 50 Xe 60 70 Hg 11 80 Rn - N 90