Podcast
Questions and Answers
What is the mass number of an atom with 8 protons and 9 neutrons?
What is the mass number of an atom with 8 protons and 9 neutrons?
Which of the following quantum numbers describes the shape of an orbital?
Which of the following quantum numbers describes the shape of an orbital?
Which element oxide is likely to exhibit basic properties?
Which element oxide is likely to exhibit basic properties?
Which type of oxides are considered acidic?
Which type of oxides are considered acidic?
Signup and view all the answers
In terms of metallic behavior, where are metalloids typically located on the periodic table?
In terms of metallic behavior, where are metalloids typically located on the periodic table?
Signup and view all the answers
Which element is the only liquid at 25°C under standard conditions?
Which element is the only liquid at 25°C under standard conditions?
Signup and view all the answers
Which quantum number indicates the shape of the orbital?
Which quantum number indicates the shape of the orbital?
Signup and view all the answers
According to Aufbau's Principle, how do electrons fill up orbitals?
According to Aufbau's Principle, how do electrons fill up orbitals?
Signup and view all the answers
Which type of atomic orbital is spherical in shape and present in all energy levels?
Which type of atomic orbital is spherical in shape and present in all energy levels?
Signup and view all the answers
How many f-orbitals exist based on the text?
How many f-orbitals exist based on the text?
Signup and view all the answers
Study Notes
Atomic Structure
- An atom with 8 protons and 9 neutrons has a mass number of 17 (mass number = protons + neutrons).
- The quantum number that describes the shape of an orbital is the azimuthal quantum number (l).
Chemical Properties
- Metal oxides typically exhibit basic properties due to their tendency to react with acids.
- Non-metal oxides are generally considered acidic; these oxides react with bases to form salts and water.
Periodic Trends
- Metalloids are found along the zigzag line on the periodic table, typically between metals and nonmetals, demonstrating mixed properties.
- Mercury (Hg) is the only element that is a liquid at 25°C under standard conditions.
Quantum Mechanics
- The azimuthal quantum number (l) indicates the shape of orbitals, relevant for understanding electron configuration.
- According to Aufbau's Principle, electrons occupy the lowest energy orbitals available before filling higher energy levels.
Orbital Shapes
- s-orbitals are spherical in shape and are present in all energy levels.
- There are seven f-orbitals in the f subshell, contributing to the unique properties of the lanthanides and actinides in the periodic table.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Description
Explore the trends in key atomic properties such as the formation of positive and negative ions in ionic compounds, the behavior of reactive metals and noble gases, and the metallic behavior of elements. Learn about the factors influencing the formation of ions and the behavior of metals in compounds.
