Question

Place the elements in each set in order of increasing ionization energy.
a. O, N, C
b. S, P, Cl
c. As, P, N
d. Al, Si, P

Short answer

Part(a) Order of increasing ionization energy is $\mathrm{C}<\mathrm{N}<\mathrm{O}$

Part(b) Order of increasing ionization energy is$\mathrm{P}<\mathrm{S}<\mathrm{Cl}$

Part(c) Order of increasing ionization energy is$\mathrm{As}<\mathrm{P}<\mathrm{N}$

Part(d) Order of increasing ionization energy is$\mathrm{Al}<\mathrm{Si}<\mathrm{P}$

Step-by-step solution

Part(a) Step 1 : Given information

We are given O, N, C elements. We have to arrange them in increasing ionization energy.

Part(a) Step 2 : Simplify  

As we know ionization energy increases from top to bottom and from left to right in the Periodic Table.

Therefore, From O, N, C, the increasing order of ionization energy would be $\mathrm{C}<\mathrm{N}<\mathrm{O}$

Part(b) Step 1 : Given information

We are given S, P, Cl elements. We have to arrange them in increasing ionization energy.

Part(b) Step 2 : Simplify  

As we know ionization energy increases from top to bottom and from left to right in the Periodic Table.

Therefore, From S, P, Cl, the increasing order of ionization energy would be $\mathrm{P}<\mathrm{S}<\mathrm{Cl}$

Part(c) Step 1 : Given information

We are given As, P, Cl elements. We have to arrange them in increasing ionization energy.

Part(c) Step 2 : Simplify  

As we know ionization energy increases from top to bottom and from left to right in the Periodic Table.

Therefore, From As, P, N, the increasing order of ionization energy would be$\mathrm{As}<\mathrm{P}<\mathrm{N}$

Part(d) Step 1 : Given information

We are given Al, Si, P elements. We have to arrange them in increasing ionization energy.

Part(d) Step 2 : Simplify  

As we know ionization energy increases from top to bottom and from left to right in the Periodic Table.

Therefore, From Al, Si, P, the increasing order of ionization energy would be $\mathrm{Al}<\mathrm{Si}<\mathrm{P}$