sample dat: gen chem question #67

[yahoogoogle]

---

Members do not see this ad.

The electronic configuration of a particular neutral atom is 1s2 2s2 2p6 3s2 3p2. What is the number of unpaired electrons in this atom?

answer is 3


there are 2 unpaired electrons an 3 unfilled orbitals from 3p. I just don't see where 3 comes from.

 

[jackbauer!]

The electronic configuration of a particular neutral atom is 1s2 2s2 2p6 3s2 3p2. What is the number of unpaired electrons in this atom?

answer is 3

there are 2 unpaired electrons an 2 unfilled orbitals from 3p. I just don't see where 3 comes from.

the answer is 2. if they asked for the number of unpaired orbitals, the answer would be 3.

jb!🙂

 

[yahoogoogle]

so it's mistake from ada?

 

[IsRaEl21]

ADA posted the answer for 67 as B. The answer for b is 2.
I am sure about it.

 

[yahoogoogle]

haha. you are right. looks like they updated it already. I printed out my copy a few weeks ago and it still has C for that problem.