Which element has 3 valence electrons?
The Elements in group 13 of the periodic table (Boron, Aluminum,
Gallium, etc.) have three VALENCE electrons.
What element is most reactive an en element with 7 valence electrons or an element with 8 valence electrons?
By which group (or column) it's in. The single place digit refers to the number of electrons in the valence shell of the elements in that group, with the exception of helium (which has 2, it is in group 18 because it has a full valence shell). This number of valence electrons is important in figuring out the number of bonds that element can make under normal conditions. For groups with single digit places less…
Group 1 - 1 valence electron Group 2 - 2 valence electrons Group 13 - 3 valence electrons Group 14 - 4 valence electrons Group 15 - 5 valence electrons Group 16 - 6 valence electrons Group 17 - 7 valence electrons Group 18 - 8 valence electrons Groups 3 - 12 technically have 2 valence electrons, but will also use d sublevel electrons as valence electrons as well. So their number of valence electrons…
The easiest way of determining the number of valence electrons is with main group elements. Main group elements are all the elements that are in groups 1,2,13,14,15,16,17,18 (not that if you were to only look at the ones digit is counts from 1 to 8) If there is an element in group 1 it has 1 valence electron If there is an element in group 2 it has 2 valence electrons If there is an…
Far from it. Aluminum has 3 valence electrons. The highest number is 8, which the noble gases other than helium have (helium has only 2). Metals can have 1, 2, or 3 valence electrons, so aluminum has the greatest number that an element can have if it is a metal. Once you get to 4 valence electrons (which the element carbon has) you are in the nonmetal range.
You can determine how many valence electrons an atom has by what family the element of the atom is in. For instance, if the element is in family 8A, the number of valence electrons will be 8. Or, if the element is in family 2A, the number of valence electrons for the atom will be 2. So, whatever number family the atom is in, the number of valence electrons equals that.
Which element is less reactive an element whose atoms have seven valence electrons or an element whose atoms have eight valence electrons?
the element with seven valence electrons will be more reactive. The reason for this is that elements want to always want to have a full valence shell (they always want 8, like a noble gas). The element with eight valence electron is happy with its full shell and will not want to get rid of any electrons.
Valence electrons are electrons that are on the outside "shell." In Group (column) 1, there is only one valence electrons for each element. In Group (column) 2, there are two valence electrons. Group 13: 3 valence electrons Group 14: 4 valence electrons Group 15: 5 valence electrons Group 16: 6 valence electrons Group 17: 7 valence electrons Group 18: 8 valence electrons There is no Group 19, so this list is done. For the metals…
What element has more valence electrons than oxygenfewer valence electorns than neon more protons than sodium but fewer protons than argon?
Well, look at the group(vertical) on a periodic table and you'll find group 3A. The group number tells how many valence electrons not how many electrons in an element. So Boron(B) Aluminum(Al) Gallium(Ga) Indium(In) Thallium(Tl) will all have 3 valence electrons. The atomic # tells the total # of electrons in an element.