# Can someone help me figure out what the noble gas configurations for zirconium and holmium are? [closed]

I am currently working on noble gas configurations in chemistry and I am having a hard time understanding why I got two questions wrong on a practice.

The instructions for the practice are here:

Write out the noble gas configuration for the element. Enter your answer with all values without any spaces, hyper scripts or subscripts

Example: Sulfur S - $$\ce{[Ne] 3s^2 3p^4}$$ --> [Ne]3s23p4

My questions are:

1. Write the noble gas configuration for Zr:

2. Write the noble gas configuration for Ho:

1. $$\ce{[Kr] 5s^2 4p^6 4d^2}$$ --> [Kr]5s24p64d2

2. $$\ce{[Xe] 6s^2 5p^6 4f^{11}}$$ --> [Xe]6s25p64f11

I am still getting the answers wrong. Where did I go wrong in my configurations?

• Check the prefixes for s and p orbitals. – Poutnik Oct 15 '20 at 19:29
• What does that mean? Can you show me what that looks like? Are my letters not in the correct order? – Audrey W. Oct 15 '20 at 19:32
• 4p is part of [Kr], so does 5p of [Xe]. Check the periodic table. – Poutnik Oct 15 '20 at 19:39
• I'm still not understanding. – Audrey W. Oct 15 '20 at 19:42
• "noble gas configuration for zirconium" is a terrible slang to be taken "configuration of zirconium written using the previous nearest noble gas and adding the remaining electrons". – Alchimista Oct 16 '20 at 11:43

Zirconium is $$\ce{[Kr] 4d^2 5s^2}$$. Holmium is $$\ce{[Xe] 4f^{11} 6s^2}$$. But they don't have the configuration of a rare gas.
• @AudreyW.- No that is not correct. Zirconium is $\ce{[Kr] 4d^2 5s^2}$ – MaxW Oct 15 '20 at 23:08