GROUP 2A- Alkaline Earth Metals

Beryllium

the only member of the group that forms covalent compounds with non-metals.

chronic beryllium disease (CBD)

Be Pulmonary disease

Berrylium

Amphoteric

• As a bridge element, it resembles Al

• Used to make x-ray tubes due to the fact that they

  are better at letting x-rays through rather than glass

• Classified by IARC as a class 1 known human carcinogen

Magnesium

Lightest of all structurally useful metal and the 2nd most abundant intracellular cation & a natural Ca2+ channel blocker.

• Metal present in Grignard Reagent (organometallic compound)

Milk of Magnesia Mg(OH)2

antacid & laxative

MgO (Calcined magnesia)

antacid & component of universal antidote

Magnesium trisilicate

antacid (has prolonged effect due to gelatinous consistency of preparation)

Magnesium sulfate

cathartic & anticonvulsant (IM)

Hydrated Magnesium silicate (Talc, soapstone)

adsorbent, filtering aid, clarifying agent & dusting powder aka Talc/Soapstone

Magnesium citrate

cathartic aka purgative limon, limonada purgante

white crystalline ppt

Mg Biphosphate test

white ppt

Mg hydroxide test

Calcium

Cation of hydroxyapatite (major constituent of bones and teeth) and the 2nd most abundant extracellular cation that is an essential factor in blood coagulation/clotting

cold

Calcium are more soluble in ——

Calcium carbonate

aka precipitated chalk: antacid & dentifrice

(CaCl2.H2O) Muriate of Lime

electrolyte replenisher

Calcium hydroxide

an antacid that is aka Milk of lime/Liquor calcium

Calcium lactate

source of Ca ion

Calcium oxide

aka lime/quicklime: use in preparation of various insecticides

CaSO4·1/2H2O Plaster of Paris

use for preparing bandages

Ca(ClO)2 Chlorinate lime

Bleaching agent & disinfectant

Ca3(PO4)2 Calcium phosphate

aka bone ash and the most important constituent of bones and teeth

CaBr2

Calcium sedative

brick red or dull red

Ca flame test

white ppt

Ca oxalate test

SrCl2

temperature desensitizing agent

Sr-89 chloride injection

palliative for the relief of bone pain in patients w/ skeletal metastases)

Strontium

Used in industry of pyrotechnics (red signal flare

Crimson red

Sr flame test

white ppt

Sr biphosphate test

white ppt

Sr sulfate test

Barium

Most active Group IIA element with salts that are used in green pyrotechnics

MgSO4

Barium poisoning antidote

BaSO4 Barium sulfate

used as a radiopaque agent for X-ray imaging and other diagnostic procedures

Ba(OH)2 Barium hydroxide

employed as carbon dioxide absorber

Yellowish green

Barium flame test

yellow ppt

Ba chromate test

white ppt

Ba sulfate test