Halogens

a. group 1 elements
b. elements that make up the f -block
c. elements of the s and p-blocks
d. group 17 elements
e. entire set of d-block elements

The answer is directly the group 17 elements. Those are the ones that begin with Fluorine and Chlorine. They head the group of Halogens. Go down to see the next two -- Bromine (Br) and Iodine(I). All four are halogens. Whatever is in column 17 is a halogen.

zfoods? ok, pressure is used to keep the heat inside and to keep the food perfect.

the number of protons in the nucleus of a given element. has slight luster and conducts electricity at high temperatures like metal.but like a nonmetal,boron is brittle and does not conduct electricity well at low temperatures. in graphite, carbon is a soft,brittle solid.it is reflective,ductile,or malleable.