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Physical properties : Those properties which can be seen easily without any reaction or test, for example, taste, colour etc Chemical properties : Those properties which need a test to check them out, for example, acidic or basic nature, it's reaction with metals etc.

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what are homo alicyclic compounds?????

Posted by Sagarika Kalita 7 years, 6 months ago

CBSE > Class 11 > Chemistry

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Anamika Kumari 7 years, 6 months ago

Whaen a ring of three or more carbon atoms resembling aliphatic compounds are contained in homocyclic or carbocylic compounds, they are callef alicyclic compounds.

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What are isoelectronic species

Posted by Tripti Sharma 7 years, 6 months ago

CBSE > Class 11 > Chemistry

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Chemistry Chemistry 7 years, 6 months ago

Elements are ions which have the same number of electrons electrons are called isoelectronic species

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Rohan Saini 7 years, 6 months ago

Species which have same no. Of electrones

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How to balance equation on element?

Posted by Cyfygjifjjn Shylla 7 years, 6 months ago

CBSE > Class 11 > Chemistry

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<font color="red" size="7">state Empirical Formula ? And don't report my Questions ? </font>

Posted by Luv Kapoor 7 years, 6 months ago

CBSE > Class 11 > Chemistry

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Nishita Tomar 5 years, 9 months ago

Most of your questions are reported ?

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Nancy Rajput 5 years, 9 months ago

formulae depicting constituent atom in their simplest atom

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All chemistry work does not match this app

Posted by Manoj Rao 7 years, 6 months ago

CBSE > Class 11 > Chemistry

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Definition of atomic radius, ionic radius

Posted by M. Keerthana Keerthana 7 years, 6 months ago

CBSE > Class 11 > Chemistry

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Anupam Bajpai 7 years, 6 months ago

Atomic radius of an element is a measure of the size of its atom. Ionic radius is half the distance between two ions that are barely touching each other

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What are main diffrence between a molecules and compound ??

Posted by Sudhanshu Shekhar 7 years, 6 months ago

CBSE > Class 11 > Chemistry

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Anupam Bajpai 7 years, 6 months ago

A molecule is formed whentwo or more atoms join chemically. A compound hs at least two different elements

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What is the meaning of static point charges ?

Posted by Subhajit Das 7 years, 6 months ago

CBSE > Class 11 > Chemistry

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<font color="green" size="7">limiting Reagent</font>

Posted by Luv Kapoor 7 years, 6 months ago

CBSE > Class 11 > Chemistry

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Nancy Rajput 7 years, 6 months ago

Limiting reagent is the reacting species which is totally consumed when the reaction is completed. The amount of product formed depends on limiting reagent as the reaction would cease once the limiting reagent is completely used up. For example, let us suppose that in the reaction 2H2+ O2―> 2H2O , Hydrogen is the limiting reagent so, when the given amount of hydrogen in the reaction is completely consumed the formation of H2O would cease as no more H2will be available to combine with O2. i don't have book so i prefer Google

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What will be the electronic configuration of boron

Posted by Sangeeth M?? 7 years, 6 months ago

CBSE > Class 11 > Chemistry

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Aryaveer Singh 7 years, 6 months ago

1s2, 2s2, 2p1

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h20 is normal at room temperature wheras h2s is gas . explain?

Posted by Lalit Thakur 7 years, 6 months ago

CBSE > Class 11 > Chemistry

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Sangeeth M?? 7 years, 6 months ago

H2+s--->h2s

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Sangeeth M?? 7 years, 6 months ago

H2S is an acidic oxide made up of hydrogen and sulphur. Sulpher is a gas and hydrogen too.

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calculate mass of an atom of silver

Posted by Debraj Suna 7 years, 6 months ago

CBSE > Class 11 > Chemistry

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Nancy Rajput 7 years, 6 months ago

mass of 1 atom of silver = 108 / 6.023 x 10^23 = 1.7931 x 10^-22 g. Therefore the answer is =107.9 g/mol.

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At constant temperature 200 cm3 of N2 at 720 mm and 400 cm3 of O2 at 750 mm pressure are together in a one litre flask. The final pressure of mixture is: (a) 111 mm (b) 222 mm (c) 333 mm (d) 444 mm

Posted by Anurag Das 7 years, 6 months ago

CBSE > Class 11 > Chemistry

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the first and second ionization energies of helium are 25 and 50 ev respectively calculate energy in kilojoule required to produce 1 mole of He2+ ion

Posted by Adityaraj Tiwari 7 years, 6 months ago

CBSE > Class 11 > Chemistry

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Calculate the wavelength wave no. And frequency of photon having an energy equal to 3ev

Posted by Anshul Kumar 7 years, 6 months ago

CBSE > Class 11 > Chemistry

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Explain Marx Planks Quantam Theory

Posted by Padmanabha Roy 7 years, 6 months ago

CBSE > Class 11 > Chemistry

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Madhav Garg 7 years, 6 months ago

Planck's law describes the spectral density of electromagnetic radiation emitted by a black body in thermal equilibrium at a given temperature T. The law is named after Max Planck, who proposed it in 1900. It is a pioneering result of modern physics and quantum theory.

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Why in molecular movement we consider 1st and 2s

Posted by Vinu T 7 years, 6 months ago

CBSE > Class 11 > Chemistry

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Explain S,P,D,F blocks of the modern periodic table

Posted by Sangeeth M?? 7 years, 6 months ago

CBSE > Class 11 > Chemistry

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Shreya Singh 7 years, 6 months ago

f-block elements Elements in which the differentiating electron enters into (n-2)f orbital of antipenultimate or ultimate shell are called as f-block elements. f-block contains two series 4f series called as lanthanides and 5f series called as actinides. f-block elements r also known as inner transition elements. General electronic configuration of f-block elements is- (n-2)f^1-14(n-d)^0-1ns^2 np^6

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Shreya Singh 7 years, 6 months ago

ns^1-2*(for g.e.c.of d-block elements)

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Shreya Singh 7 years, 6 months ago

General electronic configuration of d-block elements - (n-1)d^1-10 ns^2 np^6

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Shreya Singh 7 years, 6 months ago

d-block elements Elements in which the differentiating electron enters into (n-1)d orbital of penultimate shell are called d-block elements. d-block contains 10 groups (3-12 groups). d-block elements are also known as transition elements except 12 group.

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Shreya Singh 7 years, 6 months ago

First just remember the point that the letter denoting blocks i.e.s,p,d,f are always written in small letters. s-block Elements in which the differentiating electon enters into s-orbital of valence shell are called as s-block elements. s-block max. accomodates 2 electrons so,it has 2 groups,first group and second group. General electronic configuration of s-block elements is - ns^1-2. p-block Elements in which the differentiating electon enters into p-orbital of valence shell are called as p-block elements. p-block max. accomodates 6 electons so,it has 6 groups (13-18 groups). General electronic configuration of p-block elements is - ns^2np6.

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If the frequency of an electromagnetic radiation is 1 Hz then the energy of this radiation would be

Posted by Sarthak Kaushik 7 years, 6 months ago

CBSE > Class 11 > Chemistry