Multiple Choice
Which of the following is a metalloid that is also a chalcogen?
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4. Atoms and Elements
Periodic Table: Group Names
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In the periodic table, a horizontal row is called a(n):
A
period
B
group
C
family
D
block
Verified step by step guidance1
Understand that the periodic table is organized in two main directions: horizontally and vertically.
Recognize that the horizontal rows in the periodic table are called 'periods'. Each period corresponds to the filling of a different electron shell.
Know that the vertical columns are called 'groups' or 'families', which contain elements with similar chemical properties.
Recall that 'block' refers to sections of the periodic table based on electron subshells (s, p, d, f blocks), not rows or columns.
Therefore, the term for a horizontal row in the periodic table is 'period'.
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