Question

what are normal elements and harmful elements​

Answer 1

Answer:

er: Halogen family: Group 17 elements—fluorine (F), chlorine (Cl), bromine (Br), iodine (I) and astatine (At). Their general electronic configuration is ns2np5. Normal elements: Elements belonging to the s- and p-blocks in the periodic table are called the normal elements or main group elements

Answer 2

NORMAL ELEMENTS:

H

HE

LI ETC......

ALL ELEMENTS ARE SAFE

HARMFUL ELEMENTS:

ALL ACIDS LIKE HCL, SO2 ETC.......