How many elements are present in the sixth period of the periodic table?
a) 2
b) 8
c) 18
d) 32
Groups and Classification of Elements into Group:
In chemistry, a group is a column of elements in the
periodic table of the chemical elements. There are 18 numbered groups in the
periodic table; the f-block columns are not numbered.
Which of the
following is called group in the periodic table?
a) vertical column
b) horizontal
rows
c) oblique rows
d) none of these
Which of the following is same for elements present in the same group of periodic table?
a)valence electrons
b) electrons
c) protons
d) neutrons
How many total numbers of groups are present in the periodic table?
a) 2
b) 8
c) 18
d) 32
Groups in the periodic table are divided into ……..groups.
a) two
b) three
c) four
d) seven
Explanation:1. Group A and 2. Group B
