What are the properties of Group 2 in the periodic table?
The Group 2 alkaline earth metals include Beryllium, Magnesium, Calcium, Barium, Strontium and Radium and are soft, silver metals that are less metallic in character than the Group 1 Alkali Metals.
Which properties are characteristic of the Group 2 metals?
Properties of Alkaline Earth Metals
- shiny.
- silvery-white.
- somewhat reactive metals at standard temperature and pressure.
- readily lose their two outermost electrons to form cations with a 2+ charge.
- low densities.
- low melting points.
- low boiling points.
What are alkaline earth metals used for?
The alkaline earth elements are found in many common materials. For example, calcium ions are a major component of your bones, magnesium is used in a variety of metal alloys, strontium is used in television tubes, and barium compounds are used as X-ray contrast agents. Radium is a very rare radioactive material.
What type of elements are in Group 2?
alkaline-earth metal, any of the six chemical elements that comprise Group 2 (IIa) of the periodic table. The elements are beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), and radium (Ra).
Are Group 2 elements good conductors of electricity?
The alkaline-earth elements are highly metallic and are good conductors of electricity. They have a gray-white lustre when freshly cut but tarnish readily in air, particularly the heavier members of the group.
Is Group 2 metal or nonmetal?
Alkaline-earth metals
Alkaline-earth metals: The alkaline-earth metals make up Group 2 of the periodic table, from beryllium (Be) through radium (Ra). Each of these elements has two electrons in its outermost energy level, which makes the alkaline earths reactive enough that they’re rarely found alone in nature.
Why does group 2 have similar properties?
Being in group 2 means they all have two valence electrons, or the electrons that are furthest away from the nucleus. Having two valence electrons makes this group reactive, meaning the elements want to combine with other elements, not just water. Other characteristics most share include being soft and silvery.
Why are group 2 elements good conductors?
Being a metal, they are obviously good conductors of heat and electricity. The general electronic configuration of Group 2 elements is ns2. Alkali earth metals have the capability to lose the two electrons in their outer shell. Thus, they react with other elements and form ionic compounds.
What are the uses of alkali and alkaline earth metals?
Some important uses of alkaline earth metals are:
- Be is used in the manufacture of alloys. Cu-Be alloys are used in the preparation of high strength springs.
- Mg is used to prepare alloys with Al, Zn, Mn and Sn.
- Ca is used in the extraction of metals from their oxide.
- Radium salt are used in radiotherapy.
What are the uses of the compounds of Group I elements?
Since they only have one valence electron, they can give up that electron and become like a noble gas in the cation state. So they readily give up that one valence electron. This means that group 1 elements can readily form compounds like sodium hydroxide, sodium carbonate, sodium bicarbonate, and sodium thiosulphate.
Why does Group 2 have similar properties?
Why are Group 2 elements good conductors?
What are the properties of Group 2 elements?
Properties of Group 2 Elements. This group includes beryllium, magnesium, calcium, strontium, barium, and radium. Being in group 2 means they all have two valence electrons, or the electrons that are furthest away from the nucleus. These valence electrons are typically the electrons involved in reactions.
What is the general electronic configuration of Group 2 elements?
The general electronic configuration of Group 2 elements is ns2. Alkali earth metals have the capability to lose the two electrons in their outer shell. Thus, they react with other elements and form ionic compounds. Let’s take some examples to understand the reactions of such metals.
What are the uses of Group 2 hydroxides?
Uses of Group 2 Hydroxides. Calcium hydroxide, Ca(OH) 2 is used by farmers to neutralise acidity while magnesium hydroxide, Mg(OH) 2 commonly called milk of magnesia is used to neutralise excess stomach acid in indigestion remedies. Summary. First ionisation energy decreases down the Group Reactivity increases down the Group
What does it mean to be in the Group 2?
Being in group 2 means they all have two valence electrons, or the electrons that are furthest away from the nucleus. These valence electrons are typically the electrons involved in reactions. Having two valence electrons makes this group reactive, meaning the elements want to combine with other elements, not just water.