Inorganic Chemistry Part 1_ Alkali Metals Part 1.pdf

ALKALI METALS PART 1  Module 1 Inorganic Chemistry - Part 1 - Alkali Metals Part 1 ALKALI METALS Group I-A: __________ Properties: o REACTIVE MET...

ALKALI METALS PART 1  Module 1 Inorganic Chemistry - Part 1 - Alkali Metals Part 1 ALKALI METALS Group I-A: __________ Properties: o REACTIVE METAL Most __________ o React with OXYGEN _______ and air BASIC oxides forming _______ o ACTIVE ELEMENTS Aka: __________ o Hydroxides and oxides of alkali o Valence: 1___ metals are strongly basic o They are very reactive that they INCREASES o Activity _______ with atomic number DO NOT occur freely in nature. __________ o INCREASES Alkalinity _______ with atomic number o Softer than most other metals o Degree of solvation DECREASES _______ o React with HALOGEN __________ family to form salts with atomic number Sodium as positive ion is attracted to the negative of water (oxygen). Elements Atomic number Melting point GOING DOWN: Lithium 3 186 C GOING UP: REACTIVITY ↑ Sodium 11 97.8 C MELTING ↑ ATOMIC SIZE ↑ ACTIVITY Potassium 19 62.3 C ALKALINITY METALIC Rubidium 37 38.4 Cesium 55 28.5 C Francium 87 27 C 1. Hydrogen o Shares the same properties with alkali metal Method of preparation: INFLAMMABLE 1. Lane process by Howard Lane for large scale production. o AKA: __________ air 2. MESSERSCHMIDT _______________-produces 99% pure o HENRY CAVENDISH Discovered by __________ Hydrogen. o ANTOINE LAVOISIER Named by _______________ Isotopes of Hydrogen: 1. PROTIUM _______- most abundant NEUTRON 1 o Hydrogen means “to produce water” DEUTERIUM 2. _______- heavy water NEUTRON 2 AKA: D2O LIGHTEST element (used to air baloons and ships.) o __________ 3.TRITIUM _______- radioactive NEUTRON 3 o UNIVERSE The most abundant element in the _______ INFLAMMABLE: doesnt need ignition to create fire. FLAMMABLE: needs ignition to creat fire.  ALKALI METALS - PART 1 2. Lithium o Derived from the greek word “lithos” Other uses: STONE which means “_______”. o Heat exchanger in aircon METAL 0.534g/ml Lithium has narrow therapeutic index o Lightest element with the density of _______ 3RD lightest element. o J.A. ARFWEDSON Discovered by _______________ Side Effects: Pharmacologic actions: o Movement tremors (Most o DEPRESSANT CNS __________ common neurologic SE) o DIURETIC __________ o NEPHROGENIC _______________ Diabetes Insipidus o MANIA/MENTAL DISORDER Treatment for _______________ o Pregnancy problems: causes EBSTEIN'S anomaly (malformation tricuspid valve.) __________ Lithium Compounds Compound name Other name Use Lithium Bromide o CNS depressant LiBr __________ o Sedative / Hypnotic Lithase o MANIA Treatment for _______ Quilonium o ANTACID __________ Eskalith Lithium Carbonate o DIURETIC __________ BN: _______, _______ , _______ Li2CO3 __________ ANTI-RHEUMATIC o __________ o Used in the manufacture of lithia water Bromide Elixirs 5 Bromide elixirs 3 Bromide elixirs Ammonium Bromide Ammonium Bromide Sodium Bromide Sodium Bromide Potassium Bromide Potassium Bromide Lithium Bromide Calcium Bromide  Quick Quiz! 1. They are called the “soluble group”: 4. Which of the alkali melts above 100’C? A. Alkali metals A. Rubidium B. Alkaline earth metals B. Lithium C. Aluminum-iron group C. Potassium D. Silver group D. Cesium 2. Group of elements which is considered to be the 5. Drug of choice for mania: most reactive of all metallic elements: A. Lithium carbonate A. Group O B. Amitriptyline B. Group I-A C. Deprenyl C. Group I-B D. None of the above D. Group II 3. Lightest metal: A. Osmium B. Lithium C. Zinc D. Silver