Why do elements in the same group have similar chemical properties?

Answer 1

Elements in the same group have similar properties because they have the same number of electrons in their outermost shell. Those with 3 or fewer electrons in that shell tend to be metals and those with 4 or more non metals. Metals lose their outer electron(s) when they react and non metals gain (or share) electrons when they react. The fewer electrons that need to be lost or gained the more reactive the element. So groups 1 and 7 are the most reactive. With metals the reactivity increases as you go down the group whereas with non metals the most reactive are towards the top of the group. The noble gases have complete outer electron shells and so are unreactive.

Answer 2

The periodic table was created so that elements that react similarly would be grouped together. The reason that these elements have similar properties is because atoms react depending on how many electron are in there outer shell, so even though they have different atomic masses, they have the same number of electrons in the outer shell and therefore react in the same manner as they are trying to fill that outer shell.

Answer 3

Yes elements in the same group I.E. The noble gases have similar properties in this case the stable octate is full so the elements are inert. They also consist of the same number of valance electrons. But they behave in the same matter is the most import thing

Answer 4

Because many of their properties depend on the electronic configuration of the outer orbits. For element in the same group these are similar.

Answer 5

You're starting from the wrong end of the question. The reason that elements in a group have similar properties is that they were put in a group BECAUSE they have similar properties. Remember, the table is man made, not naturally occurring.

Answer 6

the reason metals have the properties that they do

Answer 7

because they hav same valency

Answer 8

they have the same number of valence electrons

Answer 9

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