Class 11 Exam > Class 11 Questions > Among the alkali metals cesium is the most re...
Start Learning for Free
Among the alkali metals cesium is the most reactive because
- a)it has a single electron in the valence shell
- b)the outermost electron is more loosely bound than the outermost electron of the other alkali metals
- c)it is the heaviest alkali metal
- d)its incomplete shell is nearest to the nucleus
Correct answer is option 'B'. Can you explain this answer?
| FREE This question is part of | Download PDF Attempt this Test |
Verified Answer
Among the alkali metals cesium is the most reactive becausea)it has a ...
Among the alkali metals cesium is the most reactive because the outermost electron is more loosely bound than the outermost electron of the other alkali metals.
Most Upvoted Answer
Among the alkali metals cesium is the most reactive becausea)it has a ...
Explanation:
Introduction:
The alkali metals are a group of elements in the periodic table that includes lithium, sodium, potassium, rubidium, cesium, and francium. These metals are highly reactive and are known for their ability to easily lose their outermost electron, resulting in the formation of a positive ion.
Reasons for cesium being the most reactive:
1. Single electron in the valence shell:
Cesium, like all alkali metals, has a single electron in its outermost shell. This lone electron is not strongly attracted to the positively charged nucleus, making it easier for cesium to lose this electron and form a positive ion. Having only one electron in the valence shell increases the reactivity of cesium compared to elements with more electrons in their outer shells.
2. Loosely bound outermost electron:
The outermost electron of cesium is more loosely bound than the outermost electron of the other alkali metals. This is because cesium is the largest alkali metal, with the highest atomic radius. The larger size of the cesium atom leads to a weaker attraction between the nucleus and the outermost electron, making it easier for the electron to be removed. As a result, cesium exhibits a higher reactivity compared to other alkali metals.
3. Incomplete shell nearest to the nucleus:
Cesium also has an incomplete shell nearest to the nucleus. The valence electron of cesium is located in the sixth energy level, which is closer to the nucleus compared to the valence electrons of the other alkali metals. The proximity to the nucleus increases the attraction between the nucleus and the valence electron, making it easier for cesium to lose the electron and become a positively charged ion.
Summary:
Cesium is the most reactive alkali metal due to its single electron in the valence shell, the loosely bound outermost electron, and the incomplete shell nearest to the nucleus. These factors contribute to the ease with which cesium can lose its outermost electron and form a positive ion, making it highly reactive compared to the other alkali metals.
Introduction:
The alkali metals are a group of elements in the periodic table that includes lithium, sodium, potassium, rubidium, cesium, and francium. These metals are highly reactive and are known for their ability to easily lose their outermost electron, resulting in the formation of a positive ion.
Reasons for cesium being the most reactive:
1. Single electron in the valence shell:
Cesium, like all alkali metals, has a single electron in its outermost shell. This lone electron is not strongly attracted to the positively charged nucleus, making it easier for cesium to lose this electron and form a positive ion. Having only one electron in the valence shell increases the reactivity of cesium compared to elements with more electrons in their outer shells.
2. Loosely bound outermost electron:
The outermost electron of cesium is more loosely bound than the outermost electron of the other alkali metals. This is because cesium is the largest alkali metal, with the highest atomic radius. The larger size of the cesium atom leads to a weaker attraction between the nucleus and the outermost electron, making it easier for the electron to be removed. As a result, cesium exhibits a higher reactivity compared to other alkali metals.
3. Incomplete shell nearest to the nucleus:
Cesium also has an incomplete shell nearest to the nucleus. The valence electron of cesium is located in the sixth energy level, which is closer to the nucleus compared to the valence electrons of the other alkali metals. The proximity to the nucleus increases the attraction between the nucleus and the valence electron, making it easier for cesium to lose the electron and become a positively charged ion.
Summary:
Cesium is the most reactive alkali metal due to its single electron in the valence shell, the loosely bound outermost electron, and the incomplete shell nearest to the nucleus. These factors contribute to the ease with which cesium can lose its outermost electron and form a positive ion, making it highly reactive compared to the other alkali metals.
Attention Class 11 Students!
To make sure you are not studying endlessly, EduRev has designed Class 11 study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in Class 11.
|
Explore Courses for Class 11 exam
|
|
Top Courses for Class 11View all
Among the alkali metals cesium is the most reactive becausea)it has a single electron in the valence shellb)the outermost electron is more loosely bound than the outermost electron of the other alkali metalsc)it is the heaviest alkali metald)its incomplete shell is nearest to the nucleusCorrect answer is option 'B'. Can you explain this answer?
Question Description
Among the alkali metals cesium is the most reactive becausea)it has a single electron in the valence shellb)the outermost electron is more loosely bound than the outermost electron of the other alkali metalsc)it is the heaviest alkali metald)its incomplete shell is nearest to the nucleusCorrect answer is option 'B'. Can you explain this answer? for Class 11 2024 is part of Class 11 preparation. The Question and answers have been prepared according to the Class 11 exam syllabus. Information about Among the alkali metals cesium is the most reactive becausea)it has a single electron in the valence shellb)the outermost electron is more loosely bound than the outermost electron of the other alkali metalsc)it is the heaviest alkali metald)its incomplete shell is nearest to the nucleusCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for Class 11 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Among the alkali metals cesium is the most reactive becausea)it has a single electron in the valence shellb)the outermost electron is more loosely bound than the outermost electron of the other alkali metalsc)it is the heaviest alkali metald)its incomplete shell is nearest to the nucleusCorrect answer is option 'B'. Can you explain this answer?.
Among the alkali metals cesium is the most reactive becausea)it has a single electron in the valence shellb)the outermost electron is more loosely bound than the outermost electron of the other alkali metalsc)it is the heaviest alkali metald)its incomplete shell is nearest to the nucleusCorrect answer is option 'B'. Can you explain this answer? for Class 11 2024 is part of Class 11 preparation. The Question and answers have been prepared according to the Class 11 exam syllabus. Information about Among the alkali metals cesium is the most reactive becausea)it has a single electron in the valence shellb)the outermost electron is more loosely bound than the outermost electron of the other alkali metalsc)it is the heaviest alkali metald)its incomplete shell is nearest to the nucleusCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for Class 11 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Among the alkali metals cesium is the most reactive becausea)it has a single electron in the valence shellb)the outermost electron is more loosely bound than the outermost electron of the other alkali metalsc)it is the heaviest alkali metald)its incomplete shell is nearest to the nucleusCorrect answer is option 'B'. Can you explain this answer?.
Solutions for Among the alkali metals cesium is the most reactive becausea)it has a single electron in the valence shellb)the outermost electron is more loosely bound than the outermost electron of the other alkali metalsc)it is the heaviest alkali metald)its incomplete shell is nearest to the nucleusCorrect answer is option 'B'. Can you explain this answer? in English & in Hindi are available as part of our courses for Class 11.
Download more important topics, notes, lectures and mock test series for Class 11 Exam by signing up for free.
Here you can find the meaning of Among the alkali metals cesium is the most reactive becausea)it has a single electron in the valence shellb)the outermost electron is more loosely bound than the outermost electron of the other alkali metalsc)it is the heaviest alkali metald)its incomplete shell is nearest to the nucleusCorrect answer is option 'B'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
Among the alkali metals cesium is the most reactive becausea)it has a single electron in the valence shellb)the outermost electron is more loosely bound than the outermost electron of the other alkali metalsc)it is the heaviest alkali metald)its incomplete shell is nearest to the nucleusCorrect answer is option 'B'. Can you explain this answer?, a detailed solution for Among the alkali metals cesium is the most reactive becausea)it has a single electron in the valence shellb)the outermost electron is more loosely bound than the outermost electron of the other alkali metalsc)it is the heaviest alkali metald)its incomplete shell is nearest to the nucleusCorrect answer is option 'B'. Can you explain this answer? has been provided alongside types of Among the alkali metals cesium is the most reactive becausea)it has a single electron in the valence shellb)the outermost electron is more loosely bound than the outermost electron of the other alkali metalsc)it is the heaviest alkali metald)its incomplete shell is nearest to the nucleusCorrect answer is option 'B'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice Among the alkali metals cesium is the most reactive becausea)it has a single electron in the valence shellb)the outermost electron is more loosely bound than the outermost electron of the other alkali metalsc)it is the heaviest alkali metald)its incomplete shell is nearest to the nucleusCorrect answer is option 'B'. Can you explain this answer? tests, examples and also practice Class 11 tests.
|
|
Explore Courses for Class 11 exam
|
|
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
Follow Us
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup