NCERT

Haloalkenes are organic compound in which halogen atoms are bonded with carbon atom with C-X bond. There are several chemical reactions which are really important for the CBSE and other exam perspective. Students cna check below;

• Nucleophilic Substitution Reactions
• Elimination Reactions
• Reaction with Metals
• Wurtz Reaction 
• Grignard Reagent Formation

Student must know that haloarenes are important organic compounds, for everyday chemistry and also to fetch marks in their exams. Students must understand and memorise few very important reaction of haloarens which can come handy in the exam hall. here are a few reactions;

• Electrophilic Substitution Reactions
• Nucleophilic Substitution Reaction
• Wurtz-Fittig Reaction
• Fittig Reaction

Students can also check the NCERT solutions for the ch 6 haloalkenes and haloarenes provided by our experts at Shiksha for better understanding.

Haloalkanes and haloarenes are organic compounds containing halogen atoms (F, Cl, Br, I) attached to an alkyl or aryl group, respectively. Students must learn physical properties, chemical properties, bond types, and their reaction with different elements, metals and compounds. We have provided the NCERT Solutions for Class 12 Chemistry Haloalkanes and Haloarenes so that students can use the solutions to understand the fundamentals and get good score in the exams. Chemistry Class 12 Haloalkaes and haloarenes is asked for 6 marks in the board exams, student should study the chapter in detail.

Your books provide a strong foundation, but for JEE Mains, you need more problem-solving practice. Add HC Verma (Physics), Arihant/Cengage (Maths), and P. Bahadur (Physical Chemistry), along with mock tests for better preparation.

Projectile motion in a plane refers to the movement of an object launched into the air, and moving under the influence of gravity along a parabolic trajectory. This projectile motion occurs in two dimensions with vertical and horizontal components acting separately. The vertical motion is affected by the gravitational acceleration and the horizontal motion remains uniform due to constant velocity. Projectile motion important factors include maximum height, time of flight and horizontal range. A few examples include- a kicked football, a thrown ball or water sprayed from a fountain.

Oxidation state of a particular element depends on the bond/ bonding process in the compound. Actinoids (5f series) have poorly shielded 5f orbitals, which can participate in bonding, while lanthanoids (4f series) have well-shielded 4f orbitals, leading to a stable +3 oxidation state. This is the reason why sctinoids show a greater range of oxidation state. Students can study d and f-block elements using NCERT Solutions provided by our experts.

When we move from left to right in the periodic table in Lanthanoid series ( La to Lu), a gradual decrease in atomic and ionic size of lanthanoids is experienced which is known as Lanthanoid contraction.  Lanthanoid contraction happens due to poor shielding by 4f electrons, causing stronger nuclear attraction which simaltenaously increases effective nuclear charge, pulling electrons closer resulting in contraction of atom. Students can check more such questions in NCERT Class 12 Chemistry solutions provided by our experts in shiksha.

Students might wonder why Transition metals have variable oxidation states unlike s and p block elements, there are several reason which are mentioned below;

• Most of the d block elemets have incompletely filled d-orbitals, which allow multiple electrons to be lost in bonding process.
• The energy difference between (n-1)d and ns orbitals is small, so both d and s orbital electrons can participate in bonding.
• They form stable ionic and covalent bonds, adjusting oxidation states according to ligand or reaction conditions.

Students can check more such questions and answers in our NCERT Solution pages, for all NCERT Tesxtbooks.