Which of the following elements belong to the second period (second row) of the periodic table?
In the periodic table, the columns are called periods
What other names are used as synonyms for the periods of the Periodic table
Amount of valence electrons
What is the group and the period of Oxygen (O)
Second group, 6th period
6th group, 2nd period
1st group, 6th period
6th group, 1st period
Which element is the found in the 3rd group and 2nd period?
Select the correct answer that completes the sentence below.
Magnesium is part of Group 2A and period 3.
Group 3A and period 2
Group 3A and period 3
Group 2A and period 2( Group 2A and period 3., Group 3A and period 2, Group 3A and period 3, Group 2A and period 2 )
Associate each of the following elementary particles with their appropriate charge
Extra difficult question:
Identify the element drawn here