In 1923, the year C&EN was born, Gilbert N. Lewis of the University of California, Berkeley, published a book titled “Valence and the Structure of Atoms and Molecules.” In the text, Lewis laid out the ...

For Class 11 students who want to get precise and comprehensive NCERT Solutions for Chemistry, we are providing here the accurate details for all questions given in Chemistry NCERT book. NCERT books ...

The chemical bond is defined, and students learn to distinguish between ionic and covalent Introduction to Bonding: The chemical bond is defined, and students learn to distinguish between ionic, ...

Ionic bonds are very strong so the melting point of an ionic compound is high. Ionic compounds do not conduct electricity in the solid state because their ions are unable to move about. However, if an ...

The chapter Chemical Bonding plays an important role in IIT JEE, UPSEE, WBJEE and various other engineering entrance examinations. This article talks about Valence Shell Electron Pair Repulsion (VSEPR ...

Try these interactive flashcards based on GCSE chemistry past papers. By working your way through the flashcards created by experts, you can prepare for your chemistry exams and make your revision ...

Scientists have produced remarkable images of carbon atoms and the bonds among them. Resembling glowing textbook diagrams, hydrocarbon molecules are shown in high resolution for the first time before ...

Atomic force microscopy (AFM) with a frequency modulation technique 1 has proven successful for imaging various sample surfaces at high resolution 2,3. Since the first-reported use of AFM to image the ...

Microscopy is advancing in leaps and bounds these days. It was just last week that scientists produced the first image of a hydrogen atom’s orbital structure. Not to be outdone, Berkeley chemists have ...

It’s a helpful rule of thumb: Main group elements prefer forming bonds that give them eight valence electrons; transition metals go for 18 electrons. Now scientists have shown that main group elements ...