Which of the following elements belong to the second period (second row) of the periodic table?
Responda
Aluminum (Al)
Beryllium (Be)
Lithium (Li)
Magnesium (Mg)
Carbon (C)
Argon (Ar)
Fluorine (F)
Questão 2
Questão
In the periodic table, the columns are called periods
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True
False
Questão 3
Questão
What other names are used as synonyms for the periods of the Periodic table
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Amount of valence electrons
Energy Levels
Electron Orbits
Rows
Columns
Questão 4
Questão
What is the group and the period of Oxygen (O)
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Second group, 6th period
6th group, 2nd period
1st group, 6th period
6th group, 1st period
Questão 5
Questão
Which element is the found in the 3rd group and 2nd period?
Responda
Hydrogen (H)
Helium (He)
Boron (B)
Magnesium (Mg)
Questão 6
Questão
Select the correct answer that completes the sentence below.
Magnesium is part of [blank_start]Group 2A and period 3.[blank_end]
Responda
Group 2A and period 3.
Group 3A and period 2
Group 3A and period 3
Group 2A and period 2
Questão 7
Questão
Associate each of the following elementary particles with their appropriate charge
Electrons: [blank_start]Negative[blank_end]
Protons: [blank_start]Positive[blank_end]
Neutrons: [blank_start]Neutral[blank_end]
Responda
Negative
Positive
Neutral
Questão 8
Questão
Extra difficult question:
Identify the element drawn here