Periodic Table Oddities Flashcards
1
Q
What atoms and rows don’t follow the octet rule
A
Hydrogen,boron,beryllium and any atoms greater than period 3
2
Q
What atoms are naturally diatomic
A
Hydrogen,Nitrogen,oxygen and all of group 7
3
Q
What 2 atoms are liquid at room temperature
A
Mercury (Hg) and Bromine (Br)
4
Q
What is the electron configuration for copper
A
1s2 2s2 2p6 3s2 3p6 4s1 3d10
5
Q
What is the electron configuration of chromium
A
1s2 2s2 2p6 3s2 3p6 4s1 3d5
6
Q
Why do chromium and copper have weird electron configurations
A
As its stabler to have one electron in the 4s shell compared to having one less electron in the d shell
