Sign In
Ask Question
Myles Lyons
Chemistry
23 March, 10:31
How many valence electrons are in Al^3+?
+3
Answers (
1
)
Tamara
23 March, 10:36
0
3 valence electrons
Explanation:
Al⁺³ has the electron configuration a of 1s² 2s² 2p⁶ 3s² and 3p¹. Since we are looking for the valence electrons, we are looking for the outer most electrons. These would be in the 3s² and 3p¹ sublevels. Adding the superscripts of these sub levels, we get:
2 + 1 = 3
∴ there are 3 valence electrons in Al⁺³
We can also check this by taking a quick look at the periodic table. We can find aluminum on the right hand side underneath boron in group 3A. There is something really cool about all the A groups. Notice the number before the A groups? 1A, 2A, 3A ... 8A. Well, it goes all the way up to 8A. There are exactly 8 valence electrons in an octet a. k. a. "the happy state of elements." In each group, it can be seen that it has a certain number of electrons by its group number. Your alkali have 1 valence electrons ... all the way to your noble gases which have 8 valence electrons. Seeing that aluminum is in group 3A, we can, thus determine that it has 3 valence electrons.
Comment
Complaint
Link
Know the Answer?
Answer
Not Sure About the Answer?
Find an answer to your question 👍
“How many valence electrons are in Al^3+? ...”
in 📗 Chemistry if the answers seem to be not correct or there’s no answer. Try a smart search to find answers to similar questions.
Search for Other Answers
You Might be Interested in
Aqueous magnesium chloride and hydrogen gas are produced when solid magnesium reacts with aqueous hydrochloric acid (hcl). what is the equation for this reaction?
Answers (1)
What is a chemical property of plastic
Answers (1)
A rock falls off a cliff and hits the ground after three seconds. What is its velocity right before it hits the ground? 9.8 m/s 0.31 m/s 29.4 m/s 3.3 m/s
Answers (1)
Which of these contain a single long dna molecule? A) gene B) Nucleotide C) chromosone D) Deoxyribose
Answers (1)
Why do meats cured with nitrate salts turn reddish?
Answers (1)
New Questions in Chemistry
A very small equilibrium constant means ... a. an equal amount of reactants and products c. more products b. more reactants d. system isn't at equilibrium
Answers (1)
What is in a banana? give me specifics?!
Answers (1)
When 17.28 mL of a 0.078 M aqueous solution of Na2SO4 is combined with 11.30 mL of a 0.20 M aqueous solution of NaCl and 7.84 mL of a 0.26 M aqueous solution of KCl, what is the total concentration of Na + in the combined solution?
Answers (1)
What mass of carbon can 3000 J of energy raise from 12°C to 40°C?
Answers (1)
How do you balance __Mg + __HCl - - > __MgCl2 + ___ H2
Answers (1)
Home
»
Chemistry
» How many valence electrons are in Al^3+?
Sign In
Sign Up
Forgot Password?