s-block vs p-block

Moderators: Chem_Mod, Chem_Admin

Posts: 25
Joined: Fri Sep 29, 2017 7:06 am

s-block vs p-block

Postby MichelleTran3I » Thu Nov 09, 2017 1:31 am

Why are s-block metals typically more reactive than p-block metals?

William Lan 2l
Posts: 73
Joined: Fri Sep 29, 2017 7:07 am

Re: s-block vs p-block

Postby William Lan 2l » Thu Nov 09, 2017 2:45 am

s-block metals have lower ionization energies compared to p-block metals. Thus, due to their low ionization energies, s-block metals tend to form cations since they are more willing to give electrons away. Due to this, they are more reactive.

Pooja Nair 1C
Posts: 55
Joined: Thu Jul 13, 2017 3:00 am

Re: s-block vs p-block

Postby Pooja Nair 1C » Tue Nov 14, 2017 12:54 pm

The p-block is actually mostly non-metals. Elements in the s-block have much lower ionization energies, so they give away electrons easily whereas the p-block elements have more filled shells, and are closer to having a full shell, so they are less likely to give away electrons as easily. Additionally, to achieve a noble gas electron configuration, elements in the s-block need only lose one or two electrons, so they are more reactive than the metals in the d-block. The comparison doesn't work for all the p-block elements - for example, flourine as the most electronegative is highly reactive.

Salman Azfar 1K
Posts: 50
Joined: Thu Jul 13, 2017 3:00 am

Re: s-block vs p-block

Postby Salman Azfar 1K » Tue Nov 14, 2017 2:40 pm

It's also fairly important to consider that this isn't necessarily a trend. It's not like elements grow less reactive moving to the right towards the p-block or anything; in fact, the halogens are often very reactive as they very badly want to gain that one electron to fill an octet.

Posts: 70
Joined: Fri Sep 29, 2017 7:04 am

Re: s-block vs p-block

Postby mayasinha1B » Tue Nov 14, 2017 3:18 pm

Since metals usually lose electrons in reactions, metals in the s-block have less electrons to lose and therefore are more likely to participate in a reaction. P-block metals have a few more electrons to lose to take part in a reaction and are less likely to form a compound or take part in a reaction.

Nyari Muchaka_Discussion 4A
Posts: 53
Joined: Thu Sep 19, 2019 12:17 am

Re: s-block vs p-block

Postby Nyari Muchaka_Discussion 4A » Mon Oct 28, 2019 9:17 pm

The s block is on the left side of the periodic table and the p block on the right side. Since ionization energy increases from left to right, the s block is more willing to give up their electrons due to their lower ionization energy in comparison to p. Thus, the s orbital is more reactive in that it will more easily give up electrons and become a cation.

Return to “Trends in The Periodic Table”

Who is online

Users browsing this forum: No registered users and 0 guests