Is sodium considered an alkali metal?

Group 1A — The Alkali Metals. Group 1A (or IA) of the periodic table are the alkali metals: hydrogen (H), lithium (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs), and francium (Fr). These are (except for hydrogen) soft, shiny, low-melting, highly reactive metals, which tarnish when exposed to air.

Why is sodium a soft metal?

sodium $\left( \text{Na} \right)$: Sodium element is present in group 1 due to presence of one valence electron. It has a large atomic size, because of all these reasons sodium metal is a soft metal. Moreover, the metallic bonding in sodium is not strong, hence it can be easily cut.

Is sodium a heavy metal?

While it is relatively easy to distinguish a heavy metal such as tungsten from a lighter metal such as sodium, a few heavy metals, such as zinc, mercury, and lead, have some of the characteristics of lighter metals, and, lighter metals such as beryllium, scandium, and titanium, have some of the characteristics of …

What are the main characteristics of alkali metals?

The alkali metals are a group of chemical elements in the periodic table with the following physical and chemical properties:

• shiny.
• soft.
• silvery.
• highly reactive at standard temperature and pressure.
• readily lose their outermost electron to form cations with a charge of +1.

Is sodium cut with knife?

Answer: Sodium Sodium is an alkali metal and is so soft that it can be easily cut by knife.

Which is the lightest metal in the world?

Lithium is considered to be the lightest or the least dense metal on earth with a density of 0.534 g/cm3.

Is sodium a very reactive metal?

Sodium is a type of metal that is very reactive. Since it’s so reactive, sodium is never found in free form in nature. Instead, sodium is always found as a salt. The most common dietary form of sodium is sodium chloride. Sodium chloride is commonly referred to as table salt.

Are sodium and potassium the most abundant alkali metals?

All of the discovered alkali metals occur in nature as their compounds: in order of abundance, sodium is the most abundant, followed by potassium, lithium, rubidium , caesium , and finally francium, which is very rare due to its extremely high radioactivity; francium occurs only in the minutest traces in nature as an intermediate step in some obscure

Is sodium an alkaline earth metal?

The most common alkali metal is sodium, which is 2.8 percent of Earth’s crust. The most common sodium compound is sodium chloride (NaCl), salt. The next most common is potassium, which is 2.6 percent of Earth’s crust. The other alkali metals are much rarer.

What are 3 facts about alkali metals?

Alkali metals have different colored flames when burnt. They are sodium (orange/yellow), lithium (red), potassium (lilac), rubidium (red) and cesium (purple/blue). Alkali metals are more reactive and have more atomic radius as we move down the table. Francium is the most reactive member of the group.