No products in the cart.

Ask questions which are clear, concise and easy to understand.

Ask Question
  • 1 answers

Rahul Raj 6 years, 4 months ago

2×KE = V×d×v^2 where V is volume , d is density and v is velocity..
  • 1 answers

Mehak Gautam 6 years, 4 months ago

This principle explains about non existence of free electrons in nucleus , strength of nuclear forces , ground state energy of H atom , radius of Bohr's orbit. This principle deals with only microscopic particles and hardly useful in everyday life.
  • 4 answers

Mehak Gautam 6 years, 4 months ago

You should learn the exceptions properly and learn the one which are frequently asked in exams . That's enough and keep others in mind .

Harender Singh 6 years, 4 months ago

We just need practice .There is nothing in learning or craming

Alok Singh 6 years, 4 months ago

Hi

Alok Singh 5 years, 8 months ago

Pata nahi hai
  • 2 answers

Khushi Tandi 6 years, 4 months ago

Use unacademy aap may be it is useful for u

Yash Goswami????? 6 years, 4 months ago

Because cbse deals with english only
  • 1 answers

Gaurav Seth 6 years, 4 months ago

Formal charge is defined as the charge assigned to an atom of a molecule.

In , sulfur is the central atom. Therefore, formula to calculate the formal charge will be as follows.

          Formal charge = Valence electrons -

Valence electrons in sulfur are 6 and lone pairs on sulfur are zero. Number of bonded electrons of sulfur are 8.

Therefore, formal charge on sulfur atom will be calculated as follows.

                   Formal charge = Valence electrons -

                                             = 6 -

                                             = 6 - 4

                                              = 2

Thus, we can conclude that the formal charge on sulfur in is +2.

  • 3 answers

Mehak Gautam 6 years, 4 months ago

According to pauli exclusive principle , only two electrons may exist in the same orbital and these electrons must have opposite spin .

Zaid Farooqui 6 years, 4 months ago

Yes

Yash Goswami????? 6 years, 4 months ago

Are u mean by pauli's exclusion principal
  • 2 answers

Tushar Srivastava 6 years, 4 months ago

Ca2po4

Satyam Prajapati 6 years, 4 months ago

Ca3(po4)2
  • 2 answers

Sia ? 6 years, 4 months ago

A regular three-dimensional arrangement of constituent particles in a crystal in which each particle is represented by a point is called crystal lattice.

Gaurav Seth 6 years, 4 months ago

Crystal Lattices

 

  • Crystalline solids have a regular and periodically repeating pattern of constituent particles.
  • The diagrammatical representation of three dimensional arrangements of constituent particles of a crystal in space with each particle depicted as a point is called crystal lattice.
  • There are only 14 possible three dimensional lattices and are known Bravais Lattices.
  • Each point in a lattice is called lattice point or lattice site.
  • Each point in a crystal lattice signifies one constituent particle which can be an atom, a molecule or an ion.
  • Lattice points are joined together using straight lines to identify the geometry of the lattice.
  • 2 answers

Tannu Sharma 6 years, 4 months ago

It is not possible to simultaneously both the position and momentum (velocity) of a microscopic particle with absolute accuracy.

Mehak Gautam 6 years, 4 months ago

Heisenberg uncertainty principle is defined as It is impossible to determine simultaneously the exact position and exact momentum of an eletron .
  • 3 answers

Rahul Raj 6 years, 4 months ago

Since 1L = 10^-3 mL = 10^-3 g H2O find mole then molecules by multiplying with Avagadro's no

Rahul Raj 6 years, 4 months ago

=5.5×10^-5×6.022×10^23 molecules =3.3×10^19 molecules

Gitika Sharma 7E ? 6 years, 4 months ago

6.022*10^23
  • 1 answers

Smitha P Krishnan 6 years, 4 months ago

Water-gas shift reaction :- The water-gas shift reaction is a chemical reaction in which
carbon monoxide reacts with steam in the presence of a catalyst to form carbon dioxide and hydrogen.
  • 1 answers

L . 6 years, 4 months ago

Let z be the wavelength of electron then z = h/mu here h is planck's constant ,m is mass and u is speed of electron
  • 1 answers

Prashant Rathor 6 years, 4 months ago

To increase melting point. And after mixed up
  • 2 answers

Vishvas Singh 6 years, 4 months ago

Thanks

Mohammad Amaan 6 years, 4 months ago

"S" subshell is non -directional because it is spherical in shape and due to this extent of overlapping is less in case of S orbital.
  • 5 answers

Lucky Singh 6 years, 4 months ago

Jj thomson

#Aditi~ Angel???? 6 years, 4 months ago

J.JThomson discovered the Electron

Karan Kakati 6 years, 4 months ago

JJ thomson aur meri nani

Baibhav Malviya 6 years, 4 months ago

Jj Thompson

Jheel Tippan 6 years, 4 months ago

J.J thomson
  • 2 answers

Trisha Pathak 6 years, 4 months ago

But it is quite harder to understand.....if u know any other trick to solve it...then plz tell bout it

Yuvika Gupta 6 years, 4 months ago

Is it not explained on this app?
  • 1 answers

Mehak Gautam 6 years, 4 months ago

As we move left to right across a period the aptomic number of the elements increases . As ap result , in a period the electronic configuration mainly involve change in the valence shells .
  • 1 answers

#Aditi~ Angel???? 6 years, 4 months ago

In most Windows applications, the Undo command is activated by pressing the Ctrl+Z or Alt+Backspace keybindings.
  • 3 answers

Karan Kakati 6 years, 4 months ago

Book mein dekh

Yogita Ingle 6 years, 4 months ago

According to Heisenberg ,it is impossible to measure both the position and momentum of moving particle with accuracy.

  • If value of position is small ,it can be measured accurately but not momentum.
  • If value of momentum is small it is measured accurately but not the position.

Deepak Gurjar 6 years, 4 months ago

According to Heisenberg it is impossible to determine the exact position and exact momentum of an atom at the same time.
  • 0 answers
  • 2 answers

Gaurav Seth 6 years, 4 months ago

S= Sharp P= Principal D= Diffuse F= Fundamental S, p,d,f are the names of subshells within a shell whose values are determined by azimuthal quantum number. Their respective azimuthal quantum numbers are 0, 1, 2 and 3. These terminologies are adopted from Spectroscopic analysis of matters.

Jay Wanjale 6 years, 4 months ago

Subshells
  • 1 answers

Sia ? 6 years, 4 months ago

Thermodynamics is the branch of physics that deals with the concepts of heat and temperature and the interconversion of heat into other forms of energy.

  • 6 answers

Karan Kakati 6 years, 4 months ago

Narendra damodar modi

#Aditi~ Angel???? 6 years, 4 months ago

J.J Thomson discovered electrin @diti?

Kumar Saksham 6 years, 4 months ago

thomson

Md Tausife Alam 6 years, 4 months ago

E.goldstein

Bhawna Sangwan 6 years, 4 months ago

J.J Thomson

Satnam Singh 6 years, 4 months ago

J.J Thomson
  • 4 answers
Hybridization is a process in two atoms are hybridised to a molecules when the there is any unpaired electons in there shell or orbits. This process of forming molecules by complete mixture of two atons in single molecule called Hybridisation. @Its Krish...

Robinpreet Kaur 6 years, 4 months ago

Thank Aditi very much yaar

Aryan Mahajan 6 years, 4 months ago

According to chemistry it is intermixing of compound

#Aditi~ Angel???? 6 years, 4 months ago

The process of an animal or plant breeding with an individual of another species or variety. "these irises are the products of hybridization carried out by a plant breeding firm" @diti?

myCBSEguide App

myCBSEguide

Trusted by 1 Crore+ Students

Test Generator

Test Generator

Create papers online. It's FREE.

CUET Mock Tests

CUET Mock Tests

75,000+ questions to practice only on myCBSEguide app

Download myCBSEguide App