Concept explainers
Interpretation:
Out of the given structures, the valid Lewis structurespossible for
Concept introduction:
The Lewis dot symbols contain dots, which give information about valence electrons.
The Lewis dot symbols represent both bonds and lone pairs as dots.
The Lewis structures represent bonds as lines and lone pairs as dots.
Octet rule states that an atom can only have eight electrons in its outermost shell.
For many molecules, it is impossible to explain all their properties by a single Lewis structure. In such cases, more than one Lewis structures are drawn to explain the properties. Such structures of a compound are called resonating structures and this phenomenon is called resonance.
Due to attraction toward electrons, the ions and the molecules get some charge over them, which is called the formal charge.
Formal charge can be calculated as
Total number of valence electrons in a free
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CHEMISTRY >CUSTOM<
- A polyatomic ion is composed of C, N, and an unknown element X. The skeletal Lewis structure of this polyatomic ion is [XCN]. The ion X2 has an electron configuration of [Ar]4s23d104p6. What is element X? Knowing the identity of X, complete the Lewis structure of the polyatomic ion, including all important resonance structures.arrow_forwardDraw Lewis structures for the following molecules or polyatomic ions. a. SO3 b. SO32arrow_forwardDraw Lewis structures for the following species. (The skeleton is indicated by the way the molecule is written.) (a) Cl2CO (b) H3C—CN (c) H2C—CH2arrow_forward
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- What possible error(s) exist in the Lewis structure (assume we are trying to represent the best possible Lewis structure for the NO₂S ion knowing N is the central atom in this polyatomic ion)? [:ö==S: N= CO :O: The best structure would have double bond and two lone pairs on each oxygen atom and a single bond with three lone pairs on the sulfur. There are no errors. This is the best possible structure. The Lewis structure above does not minimize formal charges, thus is the not the best possible structure. The nitrogen atom has an expanded octet, and this structure is impossible. The Lewis structure contains the wrong number of electrons, thus this structure is impossible.arrow_forwardDraw the following lewis structures and give the formal charges for the atoms as well as the number of valence electrons A)COCl2 B)Se)3^2- C)SiF4 D)KrF4arrow_forward1) What is the total number of valence electrons in the Lewis structure of NHF2? electrons (2) Draw a Lewis structure for NHF2.arrow_forward
- Write the lewis structure of the following ionic Compounds. a) CaCl₂ b) Ba S LiBrarrow_forwardWrite the Lewis symbol for atoms of each of the following elements: a) Te, b) Si, c) Kr, d) P.arrow_forwardConsider the Lewis structure of L2Z shown below where neither L nor Z are capable of forming an expanded octet. Without changing the central atom, how many total resonance structures, including the one shown below, are possible? A) 3 B) 4 C) 1 D) 2arrow_forward
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