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Questions and Answers
What are the groups on the periodic table?
What are the groups on the periodic table?
- Elements with the same mass
- Elements with similar reactivity
- Vertically aligned elements (correct)
- Horizontally aligned elements
What is the group and period of element U?
What is the group and period of element U?
Group 1 Period 2
How many valence electrons does T have, and on which energy level?
How many valence electrons does T have, and on which energy level?
4 valence electrons on the 3rd energy level
What are the groups and periods of elements M and I?
What are the groups and periods of elements M and I?
What is the classification of element Q?
What is the classification of element Q?
Which noble gas does not have 8 valence electrons?
Which noble gas does not have 8 valence electrons?
What are the groups and periods of elements Z and Y?
What are the groups and periods of elements Z and Y?
What is the electron distribution of D?
What is the electron distribution of D?
What are the groups and periods of elements V, W, and K?
What are the groups and periods of elements V, W, and K?
How many valence electrons do A and E atoms have?
How many valence electrons do A and E atoms have?
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Study Notes
Periodic Table Structure
- Groups are arranged vertically on the periodic table.
- Periods are arranged horizontally across the table.
Alkali Metals
- U (Group 1, Period 2) and J (Group 1, Period 3) are classified as alkali metals.
- J has more energy levels than U.
Valence Electrons
- T (Group 14, Period 2) possesses 4 valence electrons located in the 3rd energy level.
- M (Group 2, Period 3) has 2 valence electrons, indicating it's a metal.
- I (Group 13, Period 3) has 3 valence electrons in the third energy level.
- L, a noble gas (Group 18, Period 1), does not have the typical 8 valence electrons.
Nonmetals and Other Elements
- X (Group 1, Period 1) contains one proton and is classified as a nonmetal, existing as a solid at room temperature.
- Q (Group 17, Period 2) has 2 energy levels and is also a solid nonmetal at room temperature.
Nitrogen Family
- Z (Group 15, Period 3) and Y (Group 15, Period 4) belong to the nitrogen family.
- Y is in a gaseous state at room temperature.
Electron Distribution
- D has an electron configuration of s^2p^5 and is located in Group 14, Period 3.
- R (Group 2, Period 2) has an electron distribution of s^2.
Outer Energy Levels
- V (Group 18, Period 3) and W (Group 18, Period 2) have full outer energy levels.
- V has 3 energy levels while K (Group 17, Period 3) has one fewer total electron compared to V.
Specific Valence Electrons
- A (Group 13, Period 2) atoms have 3 valence electrons.
- E (Group 16, Period 2) atoms contain 6 valence electrons.
- Both A and E elements are found in the second period.
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