परमाणु की संरचना | Atomic Structure | Top questions NEET 2021 | 40 days crash course | Vipin Sir

JEE Mains 2020 - 30 Days Revision | Atomic Structure - Revision + Important Questions | Chemistry

11 AM JEE Mains 2020 - Chemistry | Atomic Structure - 30 Days Score Booster Course

Structure Of Atoms(परमाणुओं की संरचना)|Summary

Structure Of Atoms(परमाणुओं की संरचना)|Summary

NEET 2020 - Revision In 60 Days | Class 11 Atomic Structure Part - 2 | Quick Revision |

Atom(परमाणु )|Molecule(अणु)|Structure Of Atoms(परमाणुओं की संरचना)|Summary

NEET 2020 Revision In 60 Days Class 11 Atomic Structure Part -1 | Quick Revision

Read the passage given below and answer the question: In the last 10 years much has been learned about the molecular structure of elemental sulfur. It is now known that many different types of rings are sufficiently metastable to exist at room temperature for several days. It is known that at high temperature, the equilibrium composition allows for a variety of rings and chains to exist in comparable concentration, and it is known that at the boiling point and above, the vapor as well as the liquid contains small species with three, four, and five atoms. The sulfur atom has the same number of valence electrons as oxygen. Thus, sulfur atoms S_2 and S_3 have physical and chemical properties analogous to those of oxygen and ozone. S_2 has a ground state of 38 sigma 3s^2 sigma "*"3s^2 sigma 3pz^2 pi 3px^2=pi3py^2 pi"*"3px^1=pi"*"3py^1.S3 , thiozone has a well- known uv spectrum, and has a bent structure, analogous to its isovalent molecules O_3, SO_2 , and S_2O . The chemistry of the two elements, sulphur and oxygen, differs because sulfur has a pronounced tendency for catenation. The most frequently quoted explanation is based on the electron structure of the atom. Sulfur has low-lying unoccupied 3d orbitals, and it is widely believed that the 4s and 3d orbitals of sulfur participate in bonding in a manner similar to the participation of 2s and 2p orbitals in carbon. (source: Meyer, B. (1976). Elemental sulfur. Chemical Reviews, 76(3), 367-388. doi:10. 1021//cr603010003 ) In the following question, a statement of assertion followed by a statement of reason is given. Choose the correct answer out of the choices on the basis of the above passage. Assertion: Thiozone has bent structure like ozone. Reason: Ozone has a lone pair which makes the molecule bent.

One of the mineral cintaining calciumm, titanium (iv) and oxygen is termed as pervoskite and has the following structure. Ca^(+2) ions occupy the corners of the cube, O^(2-) occupy the face center and Ti^(+4) is present at the centre of the cube. Based in this information answer the question that follow: [Atomic weight: Ca=40, O=16, Ti=48 ] Which of the following cannot have pervoskite structure?