Question

Potassium and nickel are in the same row of the periodic table. What do these elements have in common?
• They have similar physical properties.
• They have the same number of electron shells.
• They have similar reactivity.
• They have the same number of valence electrons.

Answer 1

why is this place so blank like the heck.... man I'm finna put up some answers dang.

Answer 2

1 - They have the same number of electron shells.
2 - They all have the same number of electrons in the outer shell
3 - baking a cake
4 - A new substance is formed as the battery is used
5 - The H2O and O2 produced have the same mass as the original H2O2.
Grrrrrrrreat! I'm sorry I had to LOL (if you know you know)

Answer 3

Thank you!! I got 100

Answer 4

1 - They have the same number of electron shells.
2 - They all have the same number of electrons in the outer shell
3 - baking a cake
4 - A new substance is formed as the battery is used
5 - The H2O and O2 produced have the same mass as the original H2O2.
6 - 20
7 - It has the same number of atoms on both sides for each specific type of atom.
8 - eight