Alkaline Earths

Alkaline Earth metals are the elements in group 2 of the periodic table. They include beryllium, magnesium, calcium, strontium and barium. Radium is unstable as it is radioactive.

Flourine is not a Rare Earth Metal, but rather a Halogen, which is the second column from the right of the periodic table. Halogens react violently with Alkali Metals when heated and form stable compounds, usually salt like.

Examples:

Lithium + Flourine = Lithium Flouride

Sodium + Chlorine = Sodium Chloride (Table salt)

Beryllium chloride, BeCl2

Aqueous solutions

of the soluble beryllium salts are acidic as a result of the

formation of Be(OH2)42+, the tetrahydrate, which will

react to form insoluble hydroxides or hydrated

complexes at pH values between 5 and 8

FROM

Dr Robert M. Bruce, National Center for Environmental Assessment, US Environmental Protection

Agency, Cincinnati, OH, USA, and

Mr Mark Odin, Syracuse Research Corporation, Syracuse, NY, USA

Be3N2

That is 3 beryllium atoms + 2 Nitrogen atoms

Alkali metals similarities Alkaline earth metals

1.In both groups reactivity is increase down the group

2.Both are isolated from their salts by electrolytic method.

3.They are silvery white metals

4.In flame both group elements give different colors .

5.Both group elements soluble in liquid ammonia and give deep blue solution

6.Both are present in s-block .

7.Both are react with H and forms respective hydrides.

8.In both grope differentiating electron enters in s sub shell.

9.Both group elements have electro positive character

RGUKT IIIT NUZVID: N091528

Radium (Ra), atomic number 88, is the most reactive alkaline earth metal. It has the most energy levels of all the alkaline earth metals therefore it's electrons are more easily taken away.

Look at the position of Pb in the periodic table and the postion of the Alkali Earth metals.

Alkali Earth Metals are in noble-gas configuration when they are doubly charged cations.

Lead however is on the right hand side, and would like to have more electrons to get into that stablest configuration; making the bonds in lead-compounds more covalent -and stronger- in nature.

Insoluble compounds have lattice enthalpies higher than the enthalpy of solvation.

Now since Alkali Earth metals like to be in ionic states; their compounds will dissolve in general more easily than the same compounds with lead, since usually the lattice energy of lead compounds is much higher (In case of insoluble compounds higher than the energy that would be released upon solvation, which thus doesn't occur).

All these have only 2 electrons in their outermost shell. Therefore, they are kept in

group 2 in the periodic table.

Beryllium Iodide has 1 atom of Beryllium and 2 atoms of Iodine. BeI2 is the correct formula for this compound.

The periodic table goes from left to right if your looking for re-activity (with the exception of hydrogen). Lithium, Sodium, Potassium, Rubidium, Cesium, and Francium are the most reactive elements. The Noble gases are the least reactive elements which include Argon, Neon, Helium, Krypton, Xenon, Radon, and (arguably) Ununoctium. Hope that helps!

as we move down the group solubility of sulphates decrease,for alkaline earth metals because down the group, size of cation increase, thus hydration energy decreases,and thus solubility of sulphates decrease.

The alkaline earth metals are a series of elements comprising Group 2 (IUPAC style) (Group IIA) of the periodic table: beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba) and radium (Ra). This specific group in the periodic table owes its name to their oxides that simply give basic alkaline solutions.

Covalent bonding

calcium.simple.

Transition state metals include a wide variety of metals; they include iron, gold, and mercury which all have strikingly different properties (hard, soft, and liquid, for example). Nonetheless, a comparison can be made between the transition state metals and the alkali and alkaline earth metals; transition state metals are not as chemically active (some transition state metals are actually inert, such as platinum).

No,pure water is not alkali.Pure water is neutral.

Six elements are there. And they are: beryllium, magnesium, calcium, strontium, barium, radium

Berylium is a non metal element. Atomic mass of it is 9.

YEP! remember In science in order for the Alkali metals and Alkaline earth metals to become stable they must give AWAY electrons. The Earth metals have a Plus 2 charge because they give away 2 electrons on there outer shell!

The answer to your question is: barium (as BaSO4 in medicine - contrast material) , calcium (ex.: CaCl2, calcium gluconate, etc. in medicine), strontium (as strontium chloride in tooth pastes, against hypersensitivity) and magnesium (as MgSO4, MgO, etc. in medicine).

Thermal conductivity of beryllium: 190 W/m.K Electrical resistivity of beryllium: 4.10-8 ohm.meter

Beryllium is in group 2 and has two valence electrons which can readily be removed by Fluorine to form BeF2