The number of Valence electrons of an element is the same number as the element's group number. E.g. Hydrogen is in Group 1. Therefore it has 1 valence electron. Another e.g. Oxygen is in Group 6. Therefore it has 6 valence electrons.
As you go down a group (or family) on the Periodic Table, the number of valence electrons remains the same. As you go accross a row, the number of valence electrons increases by one for each element.
The number of valence electrons increases from left to right across a period.
Moving down or up a group, you notice that the number of valence electrons remains the same. Only the principle energy level changes, increasing as one moves down the group.
It stays the same.
The atomic numbers increase
it increases
They have the same number of valence electrons
Elements in the same column belong to the same family. The elements in the family also have the same number of valence electrons.
well its takes for ever to figure out
the period number tells which is the highest energy level occupied by the electrons
(6)====Molybdenum is within group 16. If in group 1 then it has 1, if group 2 then it has 2. If in the teens, drop the 1. So this element is in group 16 so it has 6 valence electrons. Try Chlorine- notice it is in group 17 so it has 7 v electrons.
left to right across on a row or a periodic table
The number of valence electrons increases from left to right across a row of the periodic table by an increment of one electron from each element to the next.
All the noble gases have 8 electrons in their valence shell except helium which have 2 electrons in its valence shell.
each time, an energy level is added. ;3
The ability of an atom to loss this number of electrons.
They have the same number of valence electrons
The number of valence electrons increases from left to right across a period.
The atom of an element in the third period of the Periodic Table has 3 energy levels and so on. Also, atoms of elements in the same group have the same no. of valence electrons.
Elements in the same column belong to the same family. The elements in the family also have the same number of valence electrons.
The number of valence electrons determine the chemical properties of a particular element. For example, elements in group 1 tend to donate its valence electron away to produce its stable +1 ion. It also explains the formation of -1 ions from group 17 elements (halogens).
You see that there are 8 electrons, which means that the shell is full. Thus, you observe that nobly gases rarely bond.
well its takes for ever to figure out