S1.3.6 Evidence of Energy Levels by 1st I.E. Trends Across a Period [HL IB Chemistry]

[@littlemac1329]

Our class as your videos to take notes on. thanks for making these even though you made them six years ago. you’re helping our School integrate HL chemistry for the IB this year

[@flowting5163]

you make chemistry soo interesting, even though you called the content boring, I still thought it was quite an entertaining video

[@milliewilkins8337]

thank you so much for your videos! I have just started HL chem and these videos have explained so much better then my teacher!

[@varun009]

Pretty stupid how the IBO puts this assessment statement before the one about electronic configuration.

[@ThetaAllardyce]

(By the way, I love the videos, I owe you a big thank you for making them).

[@ricey6667]

great ending!

[@mohamaddanial6493]

Al requires lesser energy as the electron is removed from the 3p sub level as compared to Mg's 3s electron. The 3p sublevel is of a higher energy level than the 3s sub-level. Hence, the 3p electron is further from the nucleus and experiences a weaker electrostatic force of attraction from the nucleus.

[@ThetaAllardyce]

My books says that it's easier to remove electrons if there are two electrons in the box, because they will repel each other. Which is why I don't understand why Al would have lower I.E. Since it's alone in its box and more stable, shouldn't it be /harder/ to remove and therefore have a higher I.E?

[@perryp2011]

I really dont understand the 1s(2) 2s(2) 2p(6) etc. really struggling with that.

[@TheKingoldmaster]

So how exactly would we answer a question asking how data from ionization energy graphs provide evidence of energy levels on an exam paper?

[@ibchemvids]

The higher the 1st IE the higher the energy level the electron is removed from.
Higher energy = "harder". Higher energy level = shell further from nucleus.
Check past papers for the definitive IB answers.

[@TheKingoldmaster]

Richard Thornley Thank you!

[@Savi123ify]

@@ibchemvids Wouldn't the shielding from the lower energy electron orbitals between the nucleus and valence shell make the I.E. lower the higher the energy level the electron is removed from?

[@ibchemvids]

arrows are single electrons

[@chinnychinchin89]

so i was going through mcat questions and i got one wrong that asks which element had the highest energy electron : BR-, Ca2+, Cr+, or As
I assumed BR- anion because its electron config would end in 3p^6.. but after watching this vid i assume that assumption was incorrect because the the BR anion has a filled p orbital and that makes the atom less reactive and therefore the electrons would be lower energy than As electrons for example? not directly related to ionization energy, but close?

[@stevenwhatedits]

hahahh... I thought it was only me who thinks this is boring. We spent a few weeks on this in class. It was just all repetitions. XD thx