STEM_GC11CBIId-g-68-forreportingppt.pdf.pdf

chemistry octet rule ppt for reporting

1. OCTET
RULE CHEMISTRY

2. PRE ACTIVITY chemistry
GUess the
GIbberish

3. PRE ACTIVITY eyy leakedthrown

4. PRE ACTIVITY ELECTRON

5. PRE ACTIVITY I own nick
bown dyng

6. PRE ACTIVITY IONIC
BONDING

7. PRE ACTIVITY khow vi lean
bahn theng

8. PRE ACTIVITY COVALENT
BONDING

9. objective:State the octate rule

10. The octet rule states that atoms tend to achieve eight
electrons in their valence shell to attain stability, similar to the
noble gases. Atoms with fewer than eight valence electrons
are more likely to react and form compounds in an effort to
complete the eight electrons. THE OCTet RULE

11. This rule applies only to the s and p orbitals and
is most relevant to the main group elements —
those not belonging to the transition metals or
inner-transition metal blocks. THE OCTet RULEIn these elements, an octet corresponds to an
electron configuration ending in s²p⁶,
representing a stable and balanced
arrangement of electrons.

12. But why 8
electrons
specifically? Because of the way electrons fill the s- and p-orbitals
in an atom’s shell:
s-orbital: Holds 2 electrons
p-orbital: Holds 6 electrons

2 + 6 = 8 electrons

13. Stability of Noble Gases: Noble gases like Neon (Ne) and
Argon (Ar) are chemically stable and non-reactive because
their outermost electron shells (valence shells) are completely
filled with 8 electrons. This full shell creates a balanced and low-
energy state.
But why 8 electrons
specifically?

14. While the octet rule is a useful guideline, it's not
universally applicable. For example, hydrogen and
helium only need two electrons to fill their outermost
shell, and some elements can have more than eight
electrons in their valence shell in certain compounds.

15. How do elements
achieve stability? They do this by sharing, gaining,
or losing electrons through
chemical reactions.

16. How do elements
achieve stability? Atoms can achieve an octet through:
Ionic Bonding: By transferring electrons (losing or
gaining) to form ions.
Covalent Bonding: By sharing electrons with other
atoms.

17. QUIZ

18. 1. What does the octet rule state?
A) Atoms prefer to have an odd number of electrons.
B) Atoms tend to gain, lose, or share electrons to
achieve eight valence electrons.
C) Atoms always lose electrons to become stable.
D) Atoms never react with other elements.
QUIZ

19. 2. Which of the following elements naturally has a
full octet?
A) Oxygen (O)
B) Neon (Ne)
C) Sodium (Na)
D) Hydrogen (H)
QUIZ

20. 3. How many electrons can the p-orbital hold?
A) 2
B) 4
C) 6
D) 8
QUIZ

21. 4. What type of elements follow the octet rule the
most?
A) Transition metals
B) Noble gases
C) Main group elements (s- and p-block elements)
D) Lanthanides
QUIZ

22. 5. Which of the following bonding types involves
electron transfer?
A) Covalent bonding
B) Ionic bonding
C) Metallic bonding
D) Hydrogen bonding
QUIZ

23. 6. In a covalent bond, how do atoms achieve an
octet?
A) By transferring electrons
B) By breaking existing atoms
C) By sharing electrons
D) By losing protons
QUIZ

24. 7. Why are noble gases like Neon (Ne) generally
non-reactive?
A) They have an odd number of protons.
B) They already have a full valence shell of 8 electrons.
C) They have a high number of neutrons.
D) They need more electrons to complete their shells.
QUIZ

25. 8. What is the electron configuration ending for
elements that follow the octet rule?
A) s²p⁴
B) s¹p⁵
C) s²p⁶
D) s³p³
QUIZ

26. 8. What is the electron configuration ending for
elements that follow the octet rule?
A) s²p⁴
B) s¹p⁵
C) s²p⁶
D) s³p³
QUIZ

27. 9. Which element does NOT need eight valence
electrons to be stable?
A) Carbon (C)
B) Oxygen (O)
C) Helium (He)
D) Fluorine (F)
QUIZ

28. 10. How does sodium (Na) achieve an octet in ionic
bonding?
A) By gaining one electron
B) By sharing electrons
C) By losing one electron
D) By forming a triple bond
QUIZ

29. 11-15. Explain why noble
gases are chemically
stable. QUIZ

30. Multiple Choice Quiz Answers:
1. B)
2. B)
3. C)
4. C)
5. B) ANSWER KEY
6. C)
7. B)
8. C)
9. C)
10. C)

31. ANSWER KEY11-15. Noble gases are chemically stable because their
outermost electron shells (valence shells) are completely
filled with eight electrons (except helium, which has two).
This full shell creates a balanced, low-energy state, making
noble gases non-reactive. Since they do not need to gain,
lose, or share electrons, they rarely form chemical bonds
with other elements.

32. THANK YOU