Periodic Table Oddities

Question 1

What atoms and rows don’t follow the octet rule

Answer 1

Hydrogen,boron,beryllium and any atoms greater than period 3

Question 2

What atoms are naturally diatomic

Answer 2

Hydrogen,Nitrogen,oxygen and all of group 7

Question 3

What 2 atoms are liquid at room temperature

Answer 3

Mercury (Hg) and Bromine (Br)

Question 4

What is the electron configuration for copper

Answer 4

1s2 2s2 2p6 3s2 3p6 4s1 3d10

Question 5

What is the electron configuration of chromium

Answer 5

1s2 2s2 2p6 3s2 3p6 4s1 3d5

Question 6

Why do chromium and copper have weird electron configurations

Answer 6

As its stabler to have one electron in the 4s shell compared to having one less electron in the d shell