UrbanPro
true

Find the best tutors and institutes for Class 12 Tuition

Find Best Class 12 Tuition

Please select a Category.

Please select a Locality.

No matching category found.

No matching Locality found.

Outside India?

Class 12 Tuition Updates

Ask a Question

Post a Lesson

Answered on 13/12/2018 CBSE/Class 11/Science/Chemistry/Unit 10-s -Block Elements (Alkali and Alkaline Earth Metals) CBSE/Class 11/Science/Chemistry

Mona

Reveal Chemystery with 2 years teaching experience in engineering college

Cs is used in the photoelectric cell due to the lowest ionization enthalpy among all alkali metals.
Answers 17 Comments
Dislike Bookmark

Answered on 12/12/2018 CBSE/Class 11/Science/Chemistry/Unit 10-s -Block Elements (Alkali and Alkaline Earth Metals) CBSE/Class 11/Science/Chemistry

Vikas Kumar Shukla

Correct answer is option (c). Because A peroxide is a compound containing oxygen oxygen single bond. The way you can identify it when it is in a compound is by using the valence electron of the partner substance i.e., the metal or hydrogen. let us take an example of sodium peroxide (Na2O2). We know that... read more

Correct answer is option (c). Because A peroxide is a compound containing oxygen oxygen single bond. The way you can identify it when it is in a compound is by using the valence electron of the partner substance i.e., the metal or hydrogen. let us take an example of sodium peroxide (Na2O2). We know that sodium has a valency of 1. If it were to bond to oxygen, the compound should contain one oxygen atom and two sodium atoms. When you look at a peroxide of sodium, you find that it contains two oxygen atoms. This suggests that each sodium is bonded to one oxygen atom and since oxygen has a valency of 2, then the extra electron in each oxygen is used to bond the oxygen atoms and thereby attaining stability.

read less
Answers 5 Comments 3
Dislike Bookmark

Answered on 14/12/2018 CBSE/Class 11/Science/Chemistry/Unit 10-s -Block Elements (Alkali and Alkaline Earth Metals) CBSE/Class 11/Science/Chemistry

Mona

Reveal Chemystery with 2 years teaching experience in engineering college

Lithium shows diagonal relationship with Mg as it's size is similar to Mg.
Answers 4 Comments
Dislike Bookmark

Looking for Class 12 Tuition

Find best Class 12 Tuition in your locality on UrbanPro.

FIND NOW

Answered on 07/02/2019 CBSE/Class 11/Science/Chemistry/Unit 10-s -Block Elements (Alkali and Alkaline Earth Metals) CBSE/Class 11/Science/Chemistry

Gnanasekar Murugesan

Chemistry Tutor. CBSE and State Board. M.Sc with 3 years of Research Experience in Germany.

Al
Answers 4 Comments
Dislike Bookmark

Answered on 17/03/2019 CBSE/Class 11/Science/Chemistry/Unit 10-s -Block Elements (Alkali and Alkaline Earth Metals) CBSE/Class 11/Science/Chemistry

Buddhadeb Chandra

Tutor

Alkaline earth metals are (b) less reducing than alkali metals because their atomisation enthalpies and ionisation enthalpies are relatively higher.
Answers 3 Comments
Dislike Bookmark

Answered on 25/01/2019 CBSE/Class 11/Science/Chemistry/Unit 10-s -Block Elements (Alkali and Alkaline Earth Metals) CBSE/Class 11/Science/Chemistry

Saha S

Highly Experienced Coach/Tutor/Mentor

Alkali Metal LITHIUM shows diagonal relationship with Alkaline Earth Metal MAGNESIUM
Answers 7 Comments
Dislike Bookmark

Answered on 06/12/2018 CBSE/Class 11/Science/Chemistry/Unit 10-s -Block Elements (Alkali and Alkaline Earth Metals) CBSE/Class 11/Science/Chemistry

GURUJOT SINGH

Quick lime is calcium oxide ...when it added to water it converts into slaked lime
Answers 3 Comments
Dislike Bookmark

Answered on 28/01/2019 CBSE/Class 11/Science/Chemistry/Unit 10-s -Block Elements (Alkali and Alkaline Earth Metals) CBSE/Class 11/Science/Chemistry

Saloni Goyal

I am an experienced PGT chemistry teacher. I can make you learn concepts in such a way that you will never forget them.

the smaller the cation more easily it will get solublised. thus, MgCl2 > CaCl2 > SrCl2> BaCl2
Answers 3 Comments
Dislike Bookmark

Answered on 05/12/2018 CBSE/Class 11/Science/Chemistry/Unit 10-s -Block Elements (Alkali and Alkaline Earth Metals) CBSE/Class 11/Science/Chemistry

Sivananda S.

Trainer

Li and Na only
Answers 3 Comments
Dislike Bookmark

Looking for Class 12 Tuition

Find best Class 12 Tuition in your locality on UrbanPro.

FIND NOW

Answered on 20/12/2018 CBSE/Class 11/Science/Chemistry/Unit 10-s -Block Elements (Alkali and Alkaline Earth Metals) CBSE/Class 11/Science/Chemistry

Which of the alkali metal is having least melting point?
(a) Na (b) K (c) Rb (d) Cs

Lokesh Pratap

cs
Answers 2 Comments
Dislike Bookmark

About UrbanPro

UrbanPro.com helps you to connect with the best Class 12 Tuition in India. Post Your Requirement today and get connected.

Overview

Questions 82

Total Shares  

+ Follow 105 Followers

Top Contributors

Connect with Expert Tutors & Institutes for Unit 10-s -Block Elements (Alkali and Alkaline Earth Metals)

x

Ask a Question

Please enter your Question

Please select a Tag

X

Looking for Class 12 Tuition Classes?

Find best tutors for Class 12 Tuition Classes by posting a requirement.

  • Post a learning requirement
  • Get customized responses
  • Compare and select the best

Looking for Class 12 Tuition Classes?

Find best Class 12 Tuition Classes in your locality on UrbanPro

Post your learning requirement

UrbanPro.com is India's largest network of most trusted tutors and institutes. Over 55 lakh students rely on UrbanPro.com, to fulfill their learning requirements across 1,000+ categories. Using UrbanPro.com, parents, and students can compare multiple Tutors and Institutes and choose the one that best suits their requirements. More than 7.5 lakh verified Tutors and Institutes are helping millions of students every day and growing their tutoring business on UrbanPro.com. Whether you are looking for a tutor to learn mathematics, a German language trainer to brush up your German language skills or an institute to upgrade your IT skills, we have got the best selection of Tutors and Training Institutes for you. Read more