Periodic Table information for final  [ENDORSED]

Science questions not covered in Chem 14A and 14B. Try to limit questions to chemistry (inorganic chemistry, physical chemistry, organic chemistry, biophysical chemistry, biochemistry, materials science, environmental chemistry).

Moderators: Chem_Mod, Chem_Admin

JAC_2016
Posts: 17
Joined: Wed Sep 21, 2016 3:00 pm

Periodic Table information for final

Postby JAC_2016 » Thu Dec 01, 2016 7:41 pm

For the final, do we only need to know the s block, p block, and first row of the d block, or is there more that we need to know? Because the midterm included elements that weren't in the first row of the d block but the course reader says that we only need to know the first row of the d block.

Chem_Mod
Posts: 18400
Joined: Thu Aug 04, 2011 1:53 pm
Has upvoted: 435 times

Re: Periodic Table information for final

Postby Chem_Mod » Thu Dec 01, 2016 9:48 pm

My midterm covered elements from the s block, p block, and first row of the d block.

"Because the midterm included elements that weren't in the first row of the d block"
What midterm question did this?

JAC_2016
Posts: 17
Joined: Wed Sep 21, 2016 3:00 pm

Re: Periodic Table information for final

Postby JAC_2016 » Thu Dec 01, 2016 10:07 pm

For Q4D, it asks for the ground-state electron configuration for Pb2+. I see that it isn't in the d-block but it's configuration included an element that contained the f orbital. Actually can you explain how to get the ground-state electron configuration for Pb2+?

Chem_Mod
Posts: 18400
Joined: Thu Aug 04, 2011 1:53 pm
Has upvoted: 435 times

Re: Periodic Table information for final  [ENDORSED]

Postby Chem_Mod » Fri Dec 02, 2016 3:13 pm

Pb is in the p-block.

Pb2+:
highest energy 2e- in the p-block are removed
6th row of periodic table (6s2)
d run one row behind (5d10)
f run two rows behind (4f14)

Pb2+: [Xe] 4f14 5d10 6s2


Return to “General Science Questions”

Who is online

Users browsing this forum: No registered users and 2 guests