Multiple Choice
In the periodic table, what do the vertical columns represent?
2
views
4. Atoms and Elements
Periodic Table: Group Names
Struggling with Introduction to Chemistry?
Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
Which element is located in period 3, group 2 of the periodic table?
A
Aluminum (Al)
B
Magnesium (Mg)
C
Sodium (Na)
D
Calcium (Ca)
Verified step by step guidance1
Understand the layout of the periodic table: it is organized into periods (horizontal rows) and groups (vertical columns). Periods are numbered from 1 to 7, and groups are numbered from 1 to 18.
Identify period 3: This is the third horizontal row in the periodic table. Elements in this period have their valence electrons in the third energy level.
Identify group 2: This is the second vertical column in the periodic table, also known as the alkaline earth metals group. Elements in this group have two valence electrons.
Locate the element that is at the intersection of period 3 and group 2. This element will be in the third row and second column of the periodic table.
Recall or look up the element in period 3, group 2, which is Magnesium (Mg), characterized by having two valence electrons in the third energy level.
5:33mWatch next
Master Periodic Table: Group Names with a bite sized video explanation from Jules
Start learningRelated Videos
Related Practice
Periodic Table: Group Names practice set
Problem sets built by lead tutorsExpert video explanations