Zadania z chemii IB SL

What is the correct electron domain geometry and molecular geometry of $\ce{NCl3}$? A. Trigonal planar electron domain geometry, trigonal planar molecular geometry B. Tetrahedral electron domain geometry, trigonal pyramidal molecular geometry C. Trigonal…

At room temperature hydrogen cyanide is a liquid that evaporates readily, whereas ethyne, $\ce{C2H2}$, which has almost the same molar mass, is a gas that boils at −84 °C. (i) Draw the Lewis formula of the hydrogen cyanide molecule, showing all valence…

Both ionic and covalent bonding are present in sodium ethanedioate, $\ce{Na2C2O4}$. (i) Describe the two types of bonding. Ionic bonding: Covalent bonding: (ii) Deduce a Lewis formula of the ethanedioate ion, $\ce{C2O4^2-}$. (iii) State the geometry of the…

(i) State the electron configuration of a nitrogen atom. (ii) Draw the Lewis formula of ammonia. (iii) Deduce the electron domain geometry and the molecular geometry of the ammonia molecule. (iv) Explain why the ammonia molecule is polar.

Which row lists these molecules in order of increasing bond angle? A. $\ce{NF3}$, $\ce{SiH4}$, $\ce{HCHO}$, $\ce{C2H2}$ B. $\ce{SiH4}$, $\ce{NF3}$, $\ce{HCHO}$, $\ce{C2H2}$ C. $\ce{NF3}$, $\ce{HCHO}$, $\ce{SiH4}$, $\ce{C2H2}$ D. $\ce{C2H2}$, $\ce{HCHO}$,…

What are the electron domain geometries around the nitrogen atom and the carbon atom bonded directly to it, in alanine, $\ce{H2NCH(CH3)COOH}$? A. Trigonal planar (C), trigonal pyramidal (N) B. Tetrahedral (C), trigonal pyramidal (N) C. Trigonal pyramidal (C),…

What are the electron domain geometry and the molecular geometry of sulfur dioxide, $\ce{SO2}$? A. Electron domain geometry: trigonal planar; molecular geometry: bent B. Electron domain geometry: trigonal planar; molecular geometry: trigonal planar C. Electron…