The arrangement of the electrons in an atom
2 marks · NormalThe Periodic Table is organised in columns and rows. State the name given to:
(a)[1 mark]
the vertical columns in the Periodic Table.
(b)[1 mark]
the horizontal rows in the Periodic Table.
Work this out on paper, then compare with the answer and worked solution below. With a free account you can submit written answers for marking.
Show answer
(a) groups
(b) periods
Common mistakes: Swapping columns with rows; Naming groups as periods and vice versa
Show mark scheme and worked solution
Marking points
B1 (a) · 1 mark · Correctly names the vertical columns as 'groups'.
B1 (b) · 1 mark · Correctly names the horizontal rows as 'periods'.
Worked solution
a. The vertical columns are called groups.
b. The horizontal rows are called periods.