22/11 The Atomic Structure and the Periodic Table

• Chemistry
• Secondary Education
• Age 12,13

Atomic Structure

Topic 5 Atoms, Elements, Compounds 

22 November 2023

•  State that:
• (a) Group VIII noble gases have a full outer shell
• (b) the number of outer shell electrons is equal to the group number in Groups I to VII
• (c) the number of occupied electron shells is equal to the period number
• Define isotopes as different atoms of the same element that have the same number of protons but different numbers of neutrons

My Goals Today:

• Interpret and use symbols for atoms, e.g. 162C, and ions, e.g. ³⁵₁₇Cl^– 
• State that isotopes of the same element have the same chemical properties because they have the same number of electrons and therefore the same electronic configuration

My Goals Today:

Review

Atom (Neutral: 0)

• when P = E

Ion (Charged: +/-)

• when P is NOT EQUAL to E

Atom vs. Ion

Question 1: Do elements of Group VIII (8) have full outer shells?

Question 2: Is the number of outer shell electrons equal to the group number?

Question 3: Is the number of shells equal to the period number?

Question 4:  What is an isotope?

Question 5:  How do you write it in symbols?

Question 6:  Do isotopes have the same chemical properties?

Question 7:  Do isotopes have the same physical properties?

Type two things you learned today.