PAGE PRE-U TEXT STPM INORGANIC CHEMISTRY

ISBN: 978 983 3879 83 0

Chapter 2 Group 2 Elements Practice 2.1The periodicity of Group 2 elements

Reinforce your understanding and knowledge of the periodicity of Group 2 elements by elaborating the key words given below:

STPM

: 1999, P2/Q1(a); 2001, P1/Q5Reference: Pages 8 to 11Guide

Atomic and ionic radii Nuclear charge

Screening effect Effective nuclear chargeMelting point Forces holding particles together

Lattice structure

Metallic bonds number of electrons per atom

First ionization energy Lattice energy

Standard enthalpy

formation

Fixed oxidation state +2

Lattice energy of Group 2 compounds

Measure of the strength of ionic bond

Hydration energy of Group 2 compounds

1 mol of gaseous ion dissolves in waterPRE-U TEXT

INORGANIC CHEMISTRY

PAGE 1 Pearson Malaysia Sdn. Bhd. 2007