General Characteristics of the p-block Elements — Practice Quiz
Telangana Open School (TOSS) · Class 12 · Chemistry
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Which of the following groups belong to the p-block of the periodic table?
What is the general outer electronic configuration of p-block elements?
Which of the following elements occurs in both free and combined states in nature?
Which noble gas occurs only in the free state?
Sample Questions
Atomic size generally decreases across a period in the p-block. Why?
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Nuclear charge increases
Across a period, nuclear charge increases while electrons are added to the same shell, increasing effective nuclear pull and decreasing atomic size.
Which element has the smallest atomic size in the second period of p-block?
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Fluororine
Fluorine has the highest nuclear charge in the second period p-block, pulling electrons closer and having the smallest size.
Ionization enthalpy increases across a period. Which factor is responsible?
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Decrease in atomic size
Smaller atoms hold electrons more tightly due to increased effective nuclear charge, requiring more energy to remove an electron.
Which of the following has the highest first ionization enthalpy?
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Nitrogen
Nitrogen has a half-filled p-orbital configuration (2p³), which is stable and requires more energy to remove an electron.
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