Chemistry
Get insights from 6.9k questions on Chemistry, answered by students, alumni, and experts. You may also ask and answer any question you like about Chemistry
Follow Ask QuestionQuestions
Discussions
Active Users
Followers
New answer posted
3 months agoContributor-Level 10
Aluminium is more electropositive than Cr, so it displaced chromium from Cr? O?
Cr? O? + Al - (Δ)-> Al? O? + Cr
New answer posted
3 months agoContributor-Level 10
Teflon are prepared by addition polymerization from tetrafluroethene.
CF? = CF? - (catalyst, High pressure)-> [–CF? – CF? –]? Teflon
Nylon-66, Novolac, Dacron are prepared by condensation polymerisation.
New answer posted
3 months agoContributor-Level 10
The number of Body centred unit cells in all 14 types of Bravais lattice unit cells is 3.
New answer posted
3 months agoContributor-Level 10
(4) C? H? O will have different alkyl group attached with polyvalent functional group that's why show metamerism
Only one arrangement possible so can not show metamerism.
(2) C? H? O → CH? – O – CH? – CH? Only one arrangement possible so can not show metamerism.
(1) No polyvalent functional group in C? H? , so can not show metamerism.
New answer posted
3 months agoContributor-Level 10
At room temperature Hg is liquid and it is purified by 'Distillation method'.
New answer posted
3 months agoContributor-Level 10
BeCl? in solid state exist in a polymeric form & in a vapour state in exist in a dimeric form.
chain polymeric structure
Vapour state exist in a dimeric form
New question posted
3 months agoNew answer posted
3 months agoContributor-Level 10
| H – F | H – Cl | H – Br | H – I |
| :- | :- | :- | :- |
| 1s – 2p | 1s – 3p | 1s – 4p | 1s – 5p |
Down the group size increases
Overlapping decreases
Acidic strength increases
Taking an Exam? Selecting a College?
Get authentic answers from experts, students and alumni that you won't find anywhere else
Sign Up on ShikshaOn Shiksha, get access to
- 66k Colleges
- 1.2k Exams
- 681k Reviews
- 1800k Answers