NEET Exam > NEET Videos > Inorganic Chemistry for NEET > Chemical Properties of Alkali Metals - 2
Chemical Properties of Alkali Metals - 2 Video Lecture | Inorganic Chemistry for NEET
|
74 videos|106 docs|111 tests
|
FAQs on Chemical Properties of Alkali Metals - 2 Video Lecture - Inorganic Chemistry for NEET
| 1. What are the chemical properties of alkali metals? |  |
Ans. Alkali metals have several chemical properties, including:
- They are highly reactive and readily react with water to form alkaline solutions.
- They have low ionization energies, making them prone to losing their outermost electron and forming cations.
- They have a strong tendency to form ionic compounds with non-metals.
- Alkali metals have low melting and boiling points.
- They exhibit a flame test, where they emit characteristic colors when heated in a flame.
| 2. How do alkali metals react with water? | |
Ans. Alkali metals react vigorously with water, producing hydrogen gas and an alkaline solution. The reaction is highly exothermic and can even result in an explosion if not controlled. The reaction can be represented by the general equation: 2M(s) + 2H2O(l) → 2MOH(aq) + H2(g), where M represents the alkali metal. The reactivity with water increases down the group, with potassium and rubidium reacting more violently than lithium and sodium.
| 3. Why do alkali metals have low melting and boiling points? | |
Ans. Alkali metals have low melting and boiling points due to the weak metallic bonding present in their crystal lattice. The metallic bonding is a result of the delocalized electrons moving freely among the metal atoms. In alkali metals, the strength of the metallic bonding is relatively weak due to the large atomic size and low charge density of the metal cations. This weak bonding allows alkali metals to easily overcome the intermolecular forces and transition from solid to liquid or gas phase at relatively low temperatures.
| 4. What is the significance of alkali metals' flame test? | |
Ans. The flame test is a qualitative test used to identify alkali metals based on the characteristic color they emit when heated in a flame. Each alkali metal exhibits a unique color, allowing for their identification in a mixture or compound. The flame color arises due to the excitation of electrons from lower energy levels to higher energy levels when the alkali metal atoms are heated. As the excited electrons return to their ground state, they release energy in the form of light, producing the characteristic flame color.
| 5. How do alkali metals form ionic compounds with non-metals? | |
Ans. Alkali metals have a strong tendency to lose their outermost electron and form cations. Non-metals, on the other hand, have a high electronegativity and tend to gain electrons to form anions. When alkali metals react with non-metals, such as halogens, the alkali metal atoms transfer their outermost electron to the non-metal atoms. This transfer of electrons results in the formation of ionic compounds, where the alkali metal cations and non-metal anions are held together by electrostatic attractions.
About this Video
|
1.1K Views |
|
4.88/5 Rating |
|
Dec 22, 2024 Last updated |
Video Description: Chemical Properties of Alkali Metals - 2 for NEET 2024 is part of Inorganic Chemistry for NEET preparation.
The notes and questions for Chemical Properties of Alkali Metals - 2 have been prepared according to the NEET exam syllabus.
Information about Chemical Properties of Alkali Metals - 2 covers all important topics for NEET 2024 Exam.
Find important definitions, questions, notes, meanings, examples, exercises and tests below for Chemical Properties of Alkali Metals - 2.
Introduction of Chemical Properties of Alkali Metals - 2 in English is available as part of our Inorganic Chemistry for NEET for NEET & Chemical Properties of Alkali Metals - 2 in
Hindi for Inorganic Chemistry for NEET course. Download more important topics related with notes, lectures and mock test series for
NEET Exam by signing up for free.
Description
Video Lecture & Questions for Chemical Properties of Alkali Metals - 2 Video Lecture | Inorganic Chemistry for NEET - NEET full syllabus preparation | Free video for NEET exam to prepare for Inorganic Chemistry for NEET.
Information about Chemical Properties of Alkali Metals - 2
Here you can find the meaning of Chemical Properties of Alkali Metals - 2 defined & explained in the simplest way possible.
Besides explaining types of Chemical Properties of Alkali Metals - 2 theory, EduRev gives you an ample number of questions to practice Chemical Properties of Alkali Metals - 2 tests,
examples and also practice NEET tests.
|
74 videos|106 docs|111 tests
|
|
Explore Courses for NEET exam
|
|
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
Related Searches
ppt
,MCQs
,mock tests for examination
,Extra Questions
,study material
,practice quizzes
,Summary
,video lectures
,Viva Questions
,Exam
,shortcuts and tricks
,Chemical Properties of Alkali Metals - 2 Video Lecture | Inorganic Chemistry for NEET
,past year papers
,Chemical Properties of Alkali Metals - 2 Video Lecture | Inorganic Chemistry for NEET
,Sample Paper
,Chemical Properties of Alkali Metals - 2 Video Lecture | Inorganic Chemistry for NEET
,Semester Notes
,Previous Year Questions with Solutions
,Objective type Questions
,Important questions
,Free
;
Study Chemical Properties of Alkali Metals - 2 on the App
Students of NEET can study Chemical Properties of Alkali Metals - 2 alongwith tests & analysis from the EduRev app,
which will help them while preparing for their exam. Apart from the Chemical Properties of Alkali Metals - 2,
students can also utilize the EduRev App for other study materials such as previous year question papers, syllabus, important questions, etc.
The EduRev App will make your learning easier as you can access it from anywhere you want.
The content of Chemical Properties of Alkali Metals - 2 is prepared as per the latest NEET syllabus.
|
© EduRev
|
Education Revolution
|
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup