3
Li
Lithium

11
Na
Sodium

19
K
Potassium

37
Rb
Rubidium

55
Cs
Caesium

87
Fr
Francium

G r o u p 1 - T h e A l k a l i M e t a l s

THE GROUP 1 ELEMENTS ARE SHINY, SOFT, AND HIGHLY REACTIVE METALS, NONE OF WHICH OCCUR NATURALLY AS FREE ELEMENTS

M E L T I N G P O I N T S

200 0

200

200 0

200

200 0

Li
180.5˚C

Na
97.7˚C

K
63.4˚C

Rb
39.5˚C

Cs
28.4˚C

Fr
27.0˚C

A L L
OF THE
G R O U P 1 M E TA L S
H A V E
O N E
VALENCE ELECTRON

THE REACTIVITY OF THE GROUP 1 METALS INCREASES DOWN THE GROUP A S T H E OUT E R E L E C T R ON G E T S F U R T H E R F R O M T H E N U C L E U S & BEC OMES EA SIE R TO RE M OVE

T H E A L K A L I M E T A L S R E A C T W I T H W A T E R T O F O R M
ME TA L HY D R OXI DE S

LiOH

NaOH

KOH

RbOH

CsOH

OX YG E N TO F O R M

M E T A L
A L K A L I R E A C T

O X I D E S
M E T A L S W I T H

HALOGENS TO FORM
I O N I C S A L T S

Na+

Cl-

LITHIUM

SODIUM

POTASSIUM

RUBIDIUM & CAESIUM

FRANCIUM

ANTI DEPRESSANTS

BATTERIES

STREET LAMPS

TABLE SALT

FERTILISERS

SOAPS

ATOMIC CLOCKS

RADIOACTIVE

U S E S O F T H E A L K A L I M E T A L S

2013 COMPOUND INTE REST -

The alkali metals презентация

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