potassium (K)
calcium
calcium
Sodium is the fourth most abundant element on earth
Sodium itself is an element, not a compound. If you are talking about dietary sodium, the most common source that to get that from is the compound sodium chloride (salt).
Sodium is a highly reactivated element. It shows +1 generally when combined.
calcium
calcium
Sillicon
chlorine (Cl)
Calcium shares the most characteristics with magnesium.Both belongs to 2nd group of alkaline earth metals.
The elements most similar to neon are the other noble gases in group 18. They include Helium, Neon, Argon, Krypton, Xenon, and Radon.
Sodium is the fourth most abundant element on earth
They are Unicellular.
The element most common in tothpaste is sodium.
sodium chloride
Sodium itself is an element, not a compound. If you are talking about dietary sodium, the most common source that to get that from is the compound sodium chloride (salt).
I consider that this similar element doesn't exist.