UrbanPro
true

Take Class 12 Tuition from the Best Tutors

  • Affordable fees
  • 1-1 or Group class
  • Flexible Timings
  • Verified Tutors

Did you know?

Neeta T.
04/04/2017 0 0

  PERIODIC TABLE- Periodic Laws- Genesis of Periodic Classification

  • After the proposal of John Dalton's Atomic Theory, the scientists took Atomic Weight as the important property of element and tried to seek relationship between the properties of elements and their Atomic Weights.
  • Johann Dobereiner pointed out that there were sets of three elements which showed similar chemical properties and such sets are named as Triads.

  • The Atomic Weight of the middle element of a Triad was approximately the average of the Atomic Weights of the other two members.
  • Examples for Triads: Li, Na and K; Ca, Sr and Ba; Cl, Br and I; etc.
0 Dislike
Follow 0

Please Enter a comment

Submit

Other Lessons for You

Ways to Learn Faster, Deeper, and Better Perspective and Focus
Change your focus. There are three primary ways to learn: visual, kinesthetic, and auditory. If one isn’t working for you, try another. Do walking meditation. If you’re taking a hike , go...

Biology: Nervous system
The nervous system coordinates the actions of complex organisms via the transmission of electrochemical signals: These signals are transmitted by a specialised network of cells called neurons. The...
S

Sayma S.

2 0
0

Biology tips for PMT
Students focus on NCERT only ... It will make you get 300+marks in biology only .. Read each n every single line from NCERT n try to make questions .. it will help you to memorize things better.. solve...
S

Electrostatics
Sometimes children play with the comb which attracts pieces of paper. We should know about the charges which are at rest in order to understand the reasons behind this phenomenon. Many things like a...

Escalation Clause in contract costing.
Meaning: In Fixed Price Contracts, the contract price is fixed and pre-determined. If there is an increase in prices of materials, rates of labour etc. during the period of execution of a contract,...
F
X

Looking for Class 12 Tuition Classes?

The best tutors for Class 12 Tuition Classes are on UrbanPro

  • Select the best Tutor
  • Book & Attend a Free Demo
  • Pay and start Learning

Take Class 12 Tuition with the Best Tutors

The best Tutors for Class 12 Tuition Classes are on UrbanPro

This website uses cookies

We use cookies to improve user experience. Choose what cookies you allow us to use. You can read more about our Cookie Policy in our Privacy Policy

Accept All
Decline All

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