Learn how to determine the number of valence electrons for an element using the periodic table.
Log in Steve 5 months agoPosted 5 months ago. Direct link to Steve's post “Why doesn't helium have 8...” Why doesn't helium have 8 electrons instead of 2? • (5 votes) vincent.wang11 5 months agoPosted 5 months ago. Direct link to vincent.wang11's post “Since helium is the secon...” Since helium is the second element in the table, a neutral helium atom can't have 8 electrons as it only has two. The other elements have an atomic number greater than 8. (15 votes) Susan Everly 2 months agoPosted 2 months ago. Direct link to Susan Everly's post “so how many valence elect...” so how many valence electrons does group 3-12 have? or do they have none at all? • (3 votes) Infrared 2 months agoPosted 2 months ago. Direct link to Infrared's post “It varies. Also, they hav...” It varies. Also, they have a weird habit of being able to have more than one oxidation state. Iron (26) is in the 8th group and usually has a charge of +2 or +3. (6 votes) kristine.aboloje 5 months agoPosted 5 months ago. Direct link to kristine.aboloje's post “How many electrons can fi...” How many electrons can fill each shell? • (3 votes) Anushka 3 months agoPosted 3 months ago. Direct link to Anushka's post “first shell is 2, second ...” first shell is 2, second shell is 8, third shell is 18, and then 32. (5 votes) lydia.ashenafi.277 5 months agoPosted 5 months ago. Direct link to lydia.ashenafi.277's post “At 12:29, what about the ...” At • (5 votes) alexa araujo 4 months agoPosted 4 months ago. Direct link to alexa araujo's post “How many electrons can fi...” How many electrons can fill each shell? • (3 votes) Pierce, Greyson 4 months agoPosted 4 months ago. Direct link to Pierce, Greyson's post “2, 8, 18, 32, 32, 18, 2. ...” 2, 8, 18, 32, 32, 18, 2. IT follows the rule of 2n^2, where n is equal to the position of the shell. (3 votes) Squirrel 4 months agoPosted 4 months ago. Direct link to Squirrel's post “What about the elements a...” What about the elements at the bottom who can't really fit in so they left it out? How much valence electrons do they have? • (2 votes) Infrared 2 months agoPosted 2 months ago. Direct link to Infrared's post “They have three to four v...” They have three to four valence electrons, according to my research. (3 votes) Limbo a month agoPosted a month ago. Direct link to Limbo's post “Why is Helium so special ...” Why is Helium so special and why doesn't this apply to transition metals? • (3 votes) Infrared 12 days agoPosted 12 days ago. Direct link to Infrared's post “Hydrogen and helium are i...” Hydrogen and helium are in the first period (row). Those elements only have one shell. The first shell only needs two electrons to get filled. (1 vote) Moonwatcher a month agoPosted a month ago. Direct link to Moonwatcher's post “This is the "1A,2A,3A..."...” This is the "1A,2A,3A..." scale right? • (2 votes) aadritsharma8 a month agoPosted a month ago. Direct link to aadritsharma8's post “What about the transition...” What about the transition metals • (2 votes) 3vd9 a month agoPosted a month ago. Direct link to 3vd9's post “"The number of valence el...” "The number of valence electrons for transition metals does NOT follow the same pattern as main group elements. This is due to how electrons fill in subshells of each shell. (1 vote) CatGutz 18 days agoPosted 18 days ago. Direct link to CatGutz's post “Are the electrons always ...” Are the electrons always in the same spot in the rows or can it be different? • (1 vote)Want to join the conversation?
12:29
If you're interested in learning more about this, explore electron configurations in AP Chemistry."
