General Characteristics of the p-block Elements — Chapter Summary
Telangana Open School (TOSS) · Class 12 · Chemistry
Summary of General Characteristics of the p-block Elements for Telangana Open School (TOSS) Class 12 Chemistry.
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Overview
The p-block of the periodic table includes elements from groups 13 to 18. These elements are characterized by the filling of electrons in the outermost p-orbitals. They show a wide range of physical and chemical properties, from highly reactive non-metals like fluorine and oxygen to inert noble gase
Key Concepts
The general outer electronic configuration
The general outer electronic configuration of p-block elements is ns²np¹⁻⁶. As we move across a period, electrons are added to the p-orbitals, leading
Atomic radius decreases across a period
Atomic radius decreases across a period due to increasing nuclear charge pulling electrons closer. It increases down a group due to addition of new el
It is the energy required
It is the energy required to remove the most loosely bound electron from a gaseous atom. It increases across a period and decreases down a group. Exce
It is the energy change when
It is the energy change when an electron is added to a neutral gaseous atom. It becomes more negative (exothermic) across a period but less negative d
It is the ability of
It is the ability of an atom to attract shared electrons in a covalent bond. It increases across a period and decreases down a group. Fluorine is the
Learning Objectives
- Describe the general mode of occurrence of p-block elements in nature
- Recall the electronic configurations of p-block elements
- Explain variations in atomic and physical properties across periods and groups
- Correlate element properties with their positions in the periodic table
- Understand the anomalous behavior of the first element in each group
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Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.
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