Page 281 - SUBSEC October 2017_Neat

UNIT 1
MODULE 1: FUNDAMENTALS IN CHEMISTRY (cont’d)

SPECIFIC OBJECTIVES EXPLANATORY NOTES SUGGESTED PRACTICAL
ACTIVITIES

5. Atomic Structure and the Periodic Table (cont’d)

6. Students should be able to:
7.
1.6. 7.1 calculate the relative
atomic mass of an
element, given isotopic
masses and abundances;
7.2
1.7. 7.3 explain how data from Bohr model, simple
emission spectra provide treatment of the emission
evidence for discrete spectrum of hydrogen;
energy levels within the Lyman series, Balmer series;
atom; ΔE or dE = hν.

1.8. describe the atomic Principal quantum numbers,
orbitals; s, p and d orbitals; relative
energies of 4s and 3d
orbitals.

Refer to Module, 3 Specific
Objective 5.1.

1.9. describe the shapes of the
s and p orbitals;

1.10. 7.4 determine the electronic Consider elements from
configurations of atoms atomic numbers 1 to 30.
and ions in terms of s, p
and d orbitals;

1.11. 7.5 state the factors which Include atomic radii, nuclear
influence the first charge, shielding.
ionisation energy of
elements;

1.12. 7.6 explain how ionisation Use Period 3 as an example.
energy data provide
evidence for sub-shells;
and,

1.13. derive the electronic
configuration of an
element from data on
successive ionisation
energies.

CXC A11/U2/17 12