Halogens and Noble Gases (ppt color)

Ag⁺ + Cl⁻ → ______ (Ppt. color?)

white curdy ppt

Br⁻ + AgNO₃ → ______ (Ppt. color?)

yellowish white curdy ppt

I⁻ + AgNO₃ → ______ (Ppt. color?)

yellow curdy ppt

Cl₂ + 2KI → ______ (Color change?)

MnO₂ + HCl → ______ (Gas evolved?)

Cl2 yellowish-green suffocating gas

I₂ + Starch → ______ (Color change?)

blue

Cu²⁺ + Fe → ______ (Color of deposit?)

red film

Zn²⁺ + H₂S → ______ (Ppt. color?)

white ppt

Hg₂²⁺ + 2KI → ______ (Ppt. color?)

yellow to green ppt

Na + H₂O → ______ (Gas evolved?)

H2

Niobium is formerly known as

Columbium

Group VB princiapl oxidation state

+5

Ce3+ color

colorless

Ce4+ color

orange red

Yb-169 isotope uses

brain scanning and glomerular filtration studies

Tantalum (Ta)

corrosion-resistant application in medicines

Cerium (uses)

for titrimetric analysis (redox rxn)

Cadmium (Cd) uses

toxic, itai-itai disease

Mercury (Hg) uses

Toxic, Minamata disease

Gold (Au) uses

for Rheumatoid Arthritis

Silver (Ag)

protein precipitant and astringent

Copper (Cu) uses

Fe absorption and mobilization; enzyme complexes

Zinc (Zn) uses

enzyme complexes

ZinSO4

Astringent

What is more abundant than Coinage metals?

Cerium

Titanium uses

opacifying agent