Group B elements are known as…….
a) transition elements
b) main elements
c) lanthanides
d) actinides
Members of group 18 (8th in main group A) are called……..
a) alkaline earth metals
b) alkali metals
c) halogens
d) noble gases
Members of group I A are called……..
a) alkaline earth metals
b) alkali metals
c) halogens
d) noble gases
Members of group II A are called……..
a) alkaline earth metals
b) alkali metals
c) halogens
d) noble gases
Which of the following is/are included in noble gases?
a) helium
b) neon
c) argon
d) all of these
Which of the following is/are included in noble gases?
a) krypton
b) xenon
c) radon
d) all of these
Double A
by at 2024-08-12 20:55:18