Arrange Mg, Al, Si, P and S in the correct order of their ionisation potentials.

P < S < Si < Mg < Al

No worries! We‘ve got your back. Try BYJU‘S free classes today!

P > S > Si > Mg > Al

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

P > S > Al > Mg > Si

No worries! We‘ve got your back. Try BYJU‘S free classes today!

S > P > Al > Mg > Si

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is B P > S > Si > Mg > Al
Answer: P > S > Si > Mg > Al

In the third period of the periodic table,

Element

Valence Shell Configuration

Na

3s¹

Mg

3s²

Al

3s²3p¹

Si

3s²3p²

P

3s²3p³

S

3s²3p⁴

Ideally, from left to right, ionization enthalpy increases. But we see exceptions in (Mg, Al) & (P, S) where the element to the left, Mg and P, have higher ionization enthalpies compared to their respective immediate neighbors due to stable electronic configuration.

So, the order will be: P > S > Si > Mg > Al

Suggest Corrections

Similar questions

Q. Arrange Mg, Al, Si, P and S in the correct order of their ionisation potentials.

Q. The first ionisation potential of

N a, M g, A l

and

S i

are in the order:

Question 17
Arrange the following elements in the order of their decreasing metallic character
Na, Si, Cl, Mg, Al

(a) Cl > Si >Al > Mg >Na
(b) Na >Mg >Al >Si > Cl
(c) Na > Al > Mg > Cl > Si
(d) Al > Na> Si > Ca> Mg

Q. The first ionisation potential of

N a

M g

and

S i

are 496, 737, and 776

k J m o l^{- 1}

respectively. The ionisation potential of

A l

could be:

Q. Arrange the following in the order given below : Increasing order of ionization potential of

N a, A l, M g, S i

is :

N a < A l < M g < S i

. if true enter 1 ,else enter 0.

Join BYJU'S Learning Program

Element	Valence Shell Configuration
Na	3s¹
Mg	3s²
Al	3s²3p¹
Si	3s²3p²
P	3s²3p³
S	3s²3p⁴