What does 2A mean in chemistry?

What does 2A mean in chemistry?

alkaline earth metals
Group 2A (or IIA) of the periodic table are the alkaline earth metals: beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), and radium (Ra). They are harder and less reactive than the alkali metals of Group 1A.

What is Group 2 called in the periodic table?

The Alkaline Earth Metals
Group 2 Elements: The Alkaline Earth Metals.

What are the names of the 8 groups in the periodic table?

The following are the 8 groups of the periodic table:

• Alkali metals.
• Alkaline earth metals.
• Rare earth metals.
• Crystallogens.
• Pnictogens.
• Chalcogens.
• Halogens.
• Noble gases.

What is Group 1 on the periodic table called?

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.

Is group 2A cation or anion?

Group 1A and 2A of the periodic table, alkali metals and alkaline earth metals respectively, always form cations. In contrast, Group 17A, which consists of halogens, always forms anions.

Is group 2 metal or nonmetal?

Group 2 elements are classified as metals. Group 2 elements are also known as alkaline earth metals.

What are the 9 groups of the periodic table?

We were talking about groups, which is a coincidence – I was out for a walk with a group of friends just the other day.

• Alkali metals.
• Alkaline earth metals.
• Transition metals.
• Icosagens.
• Crystallogens.
• Pnictogens.
• Chalcogens.
• Halogens.

What is group 1 and 2 on the periodic table called?

The elements in group 1 are known as the alkali metals; those in group 2 are the alkaline earth metals; those in 15 are the pnictogens; those in 16 are the chalcogens; those in 17 are the halogens; and those in 18 are the noble gases.

What are the common names of groups 1A/2A 7A and 8A?

Some groups have special names:

• Group 1A: Alkali metals.
• Group 2A: Alkali earth metals.
• Groups 3B-2B: Transition metals.
• Group 7A: Halogens.
• Group 8A: Noble gases.

What is a 2A group?

Groups are the vertical columns on a periodic table, and group 2A is on the left. Sometimes, group 2A is represented by roman numerals, or IIA. Alkaline earth metals include beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba) and radium (Ra).

What is the charge of ions in group 2A?

+2 charge
The alkali earth metals (group 2), such as, Mg or Sr lose two e-‘s to attain the configuration of Ne. Thus, the group 2 metals tend to have a +2 charge.

Why is group 2a alkaline earth metals?

When mixed with water, these oxides are simple (alkaline). Beryllium, magnesium, calcium, strontium, barium and radium are the elements in Group 2. For two reasons, these elements are referred to as Alkaline Earth metals, Their oxides remain in the crust of the earth and are very heat-stable.

What is Group 9 called?

transition metals
Group 9 is a group of chemical elements in the periodic table. Members are cobalt, rhodium, iridium and meitnerium. These are all transition metals in the d-block.

What is a group of 14 called?

The group 14 is also called the carbon family of the carbon group. Sometimes it is also called crystallogens. The first element in this group is carbon, and hence, this is called a carbon group.