module of grade 12 stem mod1-sienes.pptx

module in science

1. THE QUANTUM THEORY AND ITS RELATION TO ELECTRONIC CONFIGURATION GENERAL CHEMISTRY /QUARTER 2/WEEK 1 -MARIANNE SIENES

2. Introduction Definition of Terms

3. Definition of Terms - describe the electron in an atom. -describes where the electron is, it indicates the exact location of the electron. QUANTUM NUMBERS -also known as: orbital, angular quantum numbers(l). -the letters in the electron configuration(s,p,d,f) AZIMUTHAL QUANTUM NUMBERS(l) - it is the number of orbits of an element. -also known as MAIN ENERGY LEVEL(N) -indicates the size of orbitals. PRINCIPAL QUANTUM NUMBERS(N) - - indicates the spins of the electrons and may have ONLY TWO possible values. SPIN QUANTUM NUMBERS Magnetic Quantum Number (ml): Measures the orbital orientation of an electron along a specified axis, ranging from –l to +l.

4. 2He SPIN QUANTUM NUMBER Ex.

5. Neon AZIMUTHAL QUANTUM NUMBER Ex. Ne N=1 N=2

6. ELECTRON CONFIGURATION -Arrangement of electrons in an atom, describing how electrons occupy orbitals around the nucleus.

7. For a horizontal flow, an increase in velocity must be accompanied by a decrease in pressure . PAULI’S EXCLUSION PRINCIPLE 🔳 ⚛️ RULES GOVERNING ELECTRON CONFIGURATION

8. constant Pauli's Exclusion Principle: No two electrons can have identical quantum numbers. Aufbau Principle: Electrons occupy lowest available energy levels Hund’s Rule : Electrons occupy empty orbitals before pairing up.

9. TIPS! IN TERMS OF FINDING THE (N) OF AN ELEMENT, LOOK FOR THE BIGGEST VALUE IN THE ELECTRON CONFIGURATION OF THE ELEMENT. THE PERIOD IN THE PERIODIC TABLE OF ELEMENT INDICATES THE NUMBER OF VALENCE ELECTRON OF AN ELEMENT. Proponent of the Equation

10. Thanks for Listening!