Topic 2: Periodic Table

Mere som dette

4.06 Seaborgium

af Manuel Cruz

CH. 2 The System Unit: Processing and Memory

af Hasara Hasara

Chemistry: Preparation of Salts

af Jacy Teo

child marriage

af Pri Canova

Transition Metals (G3 - G12)

Malleable

High electrical conductivity

High melting & boling point

Topic 2: Periodic Table

Alkali metals (G1)

with oxygen to form oxides e.g. Li2O

with water to form hydroxides and hydrogen e.g. KOH

with halogens to form halides e.g. NaOH

Shiny when freshly cut

Easy to cut

Noble gases (G18)

Colourless

Monoatomic

Inert (Non- reactive)

Halogens (G17)

Poor conductors of electricity

Exist as diatomic molecules

Form halide when react with less electronegative elements

HX (aq) + H2O (l) → X- (aq) + H3O+ (aq)

Strong smell

Reacitivity decreases down the group

Alkaline earth metals (G2)

Reaction

Mg(s) + H2O(g) → MgO(s) + H2(g)

2Mg(s) + O2(g) → 2MgO(s)

MCO3(s) → MO(s) + CO2(g)

Soft, silver metals

Metalloids (G13)

Ductile & malleable

Semi-conductive

Solid at room temperature

General Trends

Ionization energy

Electronegativity

Ionic radii

Atomic radii