elements in group 17 need one more electron to attain the nearest noble gas configuration, hence they are more reactive
group seven on the periodic table is the group where all it's elements end in 'ine' :) fluorine, bromine, etc.
There are more than 3 elements in group seven, and they are called halogens.
Group 7 elements are examples of transition metals (or d-block elements)
Group one has seven known elements, the most of any of the 18 groups on the periodic table so far.
all elements are listed in a verticle column but each column indicates a family such as group seven, the halogens, or a group of similar elements such as the oxygen family or nitrogen family.
The periodic table contains seven rows of elements. The lanthanide series belongs to row six as elements 57-71. The actinide series belongs to row seven as elements 89-103.
there are 7 periods in the periodic table118
The more reactive elements on the periodic table are farther down in the rows. For example, Te, or Tellurium, is in group 16 and row 5. The elements in row 7 are the most reactive, but technically Tellurium, since it is the farthest down nonmetal on the periodic table, would be the most reactive nonmetal, technically making group 16 the most reactive row of the nonmetals.
It is The Periodic Table of Elements
The periodic table contains seven rows of elements. The lanthanide series belongs to row six as elements 57-71. The actinide series belongs to row seven as elements 89-103.
Group 7 is magnesium family.
Refer to the related link.