GROUPS have more in common than PERIODS. I don't know why, I just know the answer.
From, Bryan Hollick
Elements in the same group have more in common than elements in the same period, because elements in the same group have the same number of valence electrons.
Groups are more. There are 18 groups and 7 periods.
The more common name for group 7 elements is the halogens
Down the group electron affinity decreases Across a period electron affinity increases. However, it should be noted that chlorine is having higher electron affinity than flourine due to the small size of fluorine atom)
When the element moves from group 18 to group 1, it moves to a new period. Each period has a one more electron shell than the previous. The group 1 element has one more electron shell than the group 18 element; hence, it's atomic radius is greater.
Group 1 or group 2 elements with group 16 or group 17 elements. In general, if the electronegativity difference between the two atoms is more than 1.7 in Pauling's scale, then the two atoms form ionic bond.
this is called periodicity, the chemical properties of elements as you go across a period. The reactivity would be very great at first, especially if you are only crossing main group elements, and then would become less reactive, then very reactive again, and then one group over they would be completely inert
The more common name for group 7 elements is the halogens
No, the physical properties within a group are more alike than those of a period. This is because all elements in a group share the number of valence electrons.
Down the group electron affinity decreases Across a period electron affinity increases. However, it should be noted that chlorine is having higher electron affinity than flourine due to the small size of fluorine atom)
main group elements
Tungsten's group or family is metals. NOT metalloids!! It is a solid. More common elements in this group are Cobalt, Iron, and Sodium. and i swear this is true. (:
Group 1 elements are more reactive than that of group 2 elements.
When the element moves from group 18 to group 1, it moves to a new period. Each period has a one more electron shell than the previous. The group 1 element has one more electron shell than the group 18 element; hence, it's atomic radius is greater.
they become more reactive since you are moving from left to right on the periodic table, the elements in group 17 are the most reactive.
The elements from the group 12 are not the most reactive chemical elements.
they become more reactive since you are moving from left to right on the Periodic Table, the elements in group 17 are the most reactive.
they become more reactive since you are moving from left to right on the Periodic Table, the elements in group 17 are the most reactive.
The logical way is to be remembered that chemical properties of elements have a periodic character.