Learn how to determine the number of valence electrons for an element using the periodic table.
Log in Steve 7 months agoPosted 7 months ago. Direct link to Steve's post “Why doesn't helium have 8...” Why doesn't helium have 8 electrons instead of 2? • (9 votes) vincent.wang11 7 months agoPosted 7 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. (30 votes) Susan Yang 4 months agoPosted 4 months ago. Direct link to Susan Yang's post “so how many valence elect...” so how many valence electrons does group 3-12 have? or do they have none at all? • (6 votes) Infrared 4 months agoPosted 4 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. alexa araujo 6 months agoPosted 6 months ago. Direct link to alexa araujo's post “How many electrons can fi...” How many electrons can fill each shell? • (1 vote) Pierce, Greyson 6 months agoPosted 6 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. (6 votes) rachelaysss 14 days agoPosted 14 days ago. Direct link to rachelaysss's post “Do we always need 8 valan...” Do we always need 8 valance electrons. If we do then how does it satisfy the electrons in each shell(2,8,18,32) as we are only supposed to have 8 valence electrons • (3 votes) PhoenixPhilosophy 9 days agoPosted 9 days ago. Direct link to PhoenixPhilosophy's post “Ooh so quick question, th...” Ooh so quick question, this might be a little bit off topic (maybe just a little whoops), but I hear around that silicon and carbon have pretty similiar chemical properties and make up most of life as we know it (or at least silicon hypothetically with different predecessors and outcomes along the evolutionary tree) Is there a reason selenium hasn't been included in this list? Same number of valence electrons, but different chemical properties (maybe?) • (2 votes) Richard 5 days agoPosted 5 days ago. Direct link to Richard's post “What do you mean by inclu...” What do you mean by included in this list? (1 vote) Kytzia 2 months agoPosted 2 months ago. Direct link to Kytzia's post “how can you remember the ...” how can you remember the names of the period table • (1 vote) piggy✩°｡⋆ 2 months agoPosted 2 months ago. Direct link to piggy✩°｡⋆'s post “i memorise it usinghttps...” i memorise it using (2 votes) kristine.aboloje 8 months agoPosted 8 months ago. Direct link to kristine.aboloje's post “How many electrons can fi...” How many electrons can fill each shell? • (1 vote) Anushka 5 months agoPosted 5 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. (2 votes) davidcsjohnson 3 months agoPosted 3 months ago. Direct link to davidcsjohnson's post “Why is He in group 18 and...” Why is He in group 18 and not group 2? Wouldn't it make more sense to put it in group 2 so the number of VE is the same as the others in the group since that seems to be the way it is organized? • (1 vote) 🌊 ~Saanvika~ 💙 2 months agoPosted 2 months ago. Direct link to 🌊 ~Saanvika~ 💙's post “That is because helium ha...” That is because helium has a full outer shell like the noble gases it is grouped with, and shares many other properties with the noble gases in group 18. Hope this helps! (2 votes) Joselin Cornu ventura 2 months agoPosted 2 months ago. Direct link to Joselin Cornu ventura's post “who invented the periodic...” who invented the periodic tablet • (0 votes) trini 2 months agoPosted 2 months ago. Direct link to trini's post “Dmitri Mendeleev made the...” Dmitri Mendeleev made the design of the modern periodic table we know of today, but Alexandre-Emile Beguyer de Chancourtois organized the elements by atomic "weight" 5 years earlier. (5 votes) Charlie Clare a month agoPosted a month ago. Direct link to Charlie Clare's post “Why are Ts and Og not cla...” Why are Ts and Og not classified like the rest of the elements? • (1 vote) Richard a month agoPosted a month ago. Direct link to Richard's post “All the elements with ato...” All the elements with atomic numbers greater than uranium are synthetic, but we’ve been able to produce these synthetic elements in varying quantities based on the ease of their synthesis process. So some synthetic elements we’ve made kilogram quantities which have been stable enough to be tested and used in nuclear applications, and other we’ve made only a few atoms which lasted less than a second. The relatively more stable elements are able to be characterized so we know things like their boiling points, atomic radius, ionization energy, etc. So these elements we know generally what type they are (metal or nonmetal for example). But the less stable elements are in such a small quantity that we cannot characterize them properly so we don’t know with enough certainty what to classify them as. So tennessine and oganesson are colored differently because the authors could not decide how to classify them. They could be nonmetals, but they could also be metalloids, and we can’t be sure based on the limited information. Hope that helps. (1 vote)Want to join the conversation?
https://www.youtube.com/watch?v=rz4Dd1I_fX0
its helpful.
