Check-in. Write the electron configuration for potassium, K. What would have to happen to a potassium atom for it to have a noble gas configuration? Explain. 1s 2 2s 2 2p 6 3s 2 3p 6 4s 1. It would need to lose 1 electron (then it would be like Argon). Check-in.
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It would need to lose 1 electron (then it would be like Argon)
a) What is the charge on the Sn atom after 4 electrons have been removed?
b) Does Sn have a noble gas electron configuration once the 4 electrons have been removed?
It doesn’t have the same # of electrons as a noble gas, but it still has 18 valence electrons!
Argon, it must lose 2 electrons.
It still has 17 protons & the # of protons determines the type of element.
It is easier for these elements to gain electrons because they are closer to the noble gases on the right side of the PT.
QUESTIONS TO ANSWER
List 3 patterns you notice
What happens to the charge on an atom when you remove electrons? Explain, mentioning protons.
What happens to the charge when you add electrons? Explain, mentioning protons.
Complete the table on page 19.
Answer Questions 1 & 2.
Answer questions a-j on page 21!
Which elements will combine with Sr, strontium, in a one-to-one ratio?
Strontium loses 2 electrons and forms a +2 charge so any of the Group 6A elements (which gain 2 electrons to form a -2 charge) will combine with Strontium 1:1
Li & S
O & S
Al & O
F & Cl
I & K
H & N
Mg & F
Mg & Na
N & Al
Ca & Br