Do the elements in each period of the periodic table generally have the same number of valence electrons?

Answer 1

Each element has its own number of protons; that is what defines an element. However, generally speaking, the elements in a period have the same number of electrons in their outer shells, with some exceptions of course.

Answer 2

No - elements in groups 1-2 and 13-18 (except helium) have the same number of valence electrons as the other elements in their group. Groups, or families, are vertically arranged while periods are horizontal rows on the table. While trends exist across periods, they do not tend to share similar chemical properties because of their dissimilar numbers of valence electrons.

Answer 3

No. Period 1 only has hydrogen and helium, but its still a period. As well as two and three, they only have 8. But most of the rest (4, 5, 6) have the same amount. Of course seven doesnt have the same amount because there are some squares that have just never been discovered.

Sources: Periodic Table

Answer 4

No, the first period contains only two elements, H and He, while the second contains 8, and the sixth contains even more with 32 elements in that period.

Answer 5

Please refine the question. The answer to this specific question would be 'no'.

Answer 6

No. It is the columns, not the periods, of the table in which every element (except helium) generally has the same number of valence electrons

Answer 7

Those in vertical groups - so for example

Li, Na, K, Rb, Cs, Fr all have just one

Be, Mg, Ca, Sr, Ba, Ra all have two

F, Cl, Br, I, At all have 7

etc

Answer 8

The number of protons in the atomic nucleus is a value specific for each chemical element.

Answer 9

no it is a group of elements

Answer 10

No, they do not.