General Questions

General Chemistry

<h3>Determining the Polarity of HCN&#39;s Lewis Structure</h3>

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1.&nbsp; Determine the total number of valence electrons needed to fill the octet.

Hydrogen cyanide brings together a trio of atoms: hydrogen, carbon, and nitrogen. To make this molecule tick, these atoms need electrons to complete their outermost shells. Most atoms long for that &quot;magic number&quot; 8 in their outer shell (the octet rule). However, hydrogen, being the minimalist, is content with just 2.

Combining their desires, they collectively need 8 (for carbon) + 8 (for nitrogen) + 2 (for hydrogen) = 18 electrons. That&#39;s the golden number to make everyone happy.

8 + 8 + 2 = 18 e- are needed to fill the octets

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<h3>2. Determine the total number of valence electrons in the molecule.</h3>

Before we can distribute the electron wealth, we need to know how many they currently have. Hydrogen has an electronic configuration of the outer shell 1s1, carbon 2s22p2, and nitrogen 2s22p3.

The total number of valence electrons in the HCN molecule is:

1 + 4 + 5 = 10 e-

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<h3>3.&nbsp; Determine the number of chemical bonds.</h3>

Nr. of bonds = &frac12; &times; (Total electrons for octet - Available valence electrons) = &frac12; ​&times; (18&minus;10) = &frac12; ​&times; 8 = 4 bonds.

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<h3>4. Identify the central atom and terminal atoms and draw the skeletal structure of the molecule.</h3>

In the HCN molecule, carbon represents the central atom. It forms a mesmerizing triple covalent bond with nitrogen and a single covalent bond with hydrogen, revealing the linear shape of the molecule.

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<img alt="HCN skeleton" src="data:image/png;base64,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" style="width: 150px; height: 34px;" />

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<h3>5. Determine the number of lone electronic pairs of atoms in the molecule.</h3>

Nr. of lone electron pairs = &frac12; ​&times;(Valence electrons &ndash; Bond electrons) = &frac12; &times;(10&minus;(4&times;2))= &frac12; ​&times;(10&minus;8) = 1 lone electron pair

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<h3>6. Distribute the lone electronic pairs in a way the atoms fill the octet</h3>

Given our molecular arrangement, nitrogen is the only atom that hasn&rsquo;t quite reached its electron goal. Hence, it gladly takes in the lone electron pair, completing its octet and drawing the Lewis structure.

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<img alt="HCN Lewis structure" src="data:image/png;base64,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" style="width: 150px; height: 33px;" />

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<h3>To determine if the&nbsp;HCN molecule is polar or nonpolar, one needs to evaluate two things:</h3>

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<h3>1. Electronegativity difference between atoms:</h3>

In HCN, carbon (C) and nitrogen (N) have different electronegativities, with nitrogen being more electronegative.

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This causes an uneven distribution of electron density and creates a polar bond between the C and N atoms, &Delta;EN-C = 3.0 &ndash; 2.5 = 0.5.

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Similarly, hydrogen (H) and carbon (C) also have a difference in electronegativity, leading to another polar bond. &Delta;EC-H = 2.5 &ndash; 2.1 = 0.4.

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<h3>2. Molecular shape and symmetry:</h3>

HCN has a linear shape. Though the C-N and H-C bonds are individually polar, the sum of the bond dipoles is different from 0.

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<img alt="HCN dipole moment" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAANEAAAA5CAYAAACoLc4AAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAAfTSURBVHhe7Z1bSFRBGMc/A8GsUMqHIoo1sgx66Eo+9KAFUQSxhpFC0Ua+RKk9CCU9qEXlQ2E3H4LCblAQVEbQBcqKHnowuhFlUdtTCkFaClYPnc5/zpzt7Hp2PZc9u+6e7wfDzBlXzZn5z3zzfWemHEWFGIZxzASZMwzjEBYRw7iERcQwLmER2aW/XxbSxJcvRI8eET17Jit8xsyZRPv2Ef36JSvSj30RHT9O1NJCdPOmrPARL18SzZ6d3k48f56oooKopkZW+IxFi4iOHdPEhLYYB9gX0YkTRK2tRF1dssJHoAMLCoja27VOPHVKfoFJGVu3EuXnE33/TlRXRzRnjrYypxE25+yyaRPRnz9aJ+7fPy460VesXUv0+7dWHh4mCoeJKiuJVq3STN00wCKyy5o12moEhob+d+L69enfL/mBwkKiadPkg2RwkKi7m2jxYqL6eu05hdgPthYXa4oPhYg6O2Wlj3j/nmjFCqKfP2WFAXRuba22Z8zLk5UuwB4sdu+JVe/xY20wNTTISp9x5kz8CQvtjnTggGbupYDEImprI7p3Tz5I4BXCpnr6dKLSUlnpMxKZb+hA2OwdHUTV1bLSIdg4b98uHxhbTJxINHcu0evXssJDIKK4hEJQGKfYNGGCeb0x5eYqyubNsiEd0tlp/rM5JU6TJilKUZGi3LkjG9JbeCVywpMnRH//ygcTJk/WXNAwKdBOyQSmIryjgYC2H/MjCxZoZnUsuikHh09jo6xMAUJKdggENLVjlfIjfX2Kkp8fPfPpqaBAUaqqFCUclh/2gOZm7XehH/zIyIii5OWNbvvCQkWpq1OUgQH5wdTB3jm7YCXOzZUPEmzyEUPCXunaNW2VYLwB7Y/VRgerflUV0YsXRCdPan2RYlhEdrl/n+jHD62MDoS38soVrRMhJMZb4BGGCxtiwZsbb96kfeJiEdkFHYaZsKhIe2Ph82ctAJgqMFjKy4nKymSFz7h9W9uL37hB9PDhuFj17ceJ8O4cZgLMusGgrPQJMCUQVG1qSu3GlfkPHArjzKFlX0QMw0TB5hzDuIRFxDAuYRExjEtYRAzjEhYRw7iERcQwLmERZRjr1q2jnJycrEkzZsygmxl+X4flONGtW7fovLwY4vr16yJPxIcPH2gfLvRQaWtro3nz5omy3+nr66MHDx7Qq1ev6NOnT6Ju6tSpVF5eTqtXrxaDKh79/f0Jv56phEIh6jQc8Dx8+DD19PSI8sWLF2kyXq9KgN2xmWwsi6ijo4N2794tyla+5fnz57Rs2TJRRoMsXbpUlP3K8PAwtba20tGjR2WNOadPn6Zdu3bJp9Fg1n6JE69ZQl5enhDRdMORkY0bN9INvNajsmPHDjp79qwox8Pu2Ew6EJEV1M7Fv04kK6jCiXweZT/T29urrFy5MtIejY2NSldXl2gXpEuXLimVlZVRX/czxrZA6u7ull8xx+7YNKKKVSktLVXKysqUOw4P8bGIPGZoaCgiIOQQVDwgJr3N0N5+JVZESGjHeDgV0cjIiKKugJHvhZicwI4Fj7lw4QI9ffpUlNWZLuHecMuWLcJ8ATBPYAL6mZKSElnCYd5WWUoeg4ODIumg/MvBpZwsIo/RbXV1thxzgwwOHjwocnU2JnX2FWW/snDhQtFuAHtJ7LOTCfZhe/fuFWXszRoaGkRuFxaRhzwy3Aq0bds2WUoMvG+qhSC8TNnoibMLnCyqGSzKNTU1SV+dW1pahMcUSfcm24VF5CFv374VOQaBlVWIMefcuXMi//jxI53EEfAkgxWp0MWxckcubpgaY/Ht27fIXqAnxsWNeAds3PdmN7ZkKOqmlJqbm6NctbW1tWIAoL2SFb/AzPkYlzdmCWgvmFFlhpO6uovb2G6IHe3HLT4qseMpI13cdlOsd669vd30c5me8HcZ0b1MyJPBwMDAqN+ZDSkYDMq/UMOs3eCdKykpEfXIjd46p965ZOFoJcJMMBbv3r2jrbjBX8VsJWpqaqIvabqA3AsCgQAdOXLENGhonFHdgnZ7hmPqWQLMKGzux1qJgDGAD4eDHpTmYGsWo7dZslYiv2C2EukcOnQoMq70mJvblSgcDougq1PYseAhs2bNEjlmVTvgvUMkZjT19fWR+JEeU3PD1atXqbi4WKx6yDlONM5Yvny5LGmmiFUwOObPny8cE0w08HJewT1/KnBcwZRzwxn8DxMSbC/u3r0rn6zDIvIQxHn02VI1Q0Q+FhCb7tXcsGGDyJlosL82vtnxAhdnOmRRzIWbxr2ZVVhEHrNz506Rw6S7fPmyKMcDgcQ9e/aIMkwWFlF8juP+Q4keR3ICwhJIwWBQ9JHRMWQVFpHHYNbUVyF4K2Gime13cCZmyZIlkVXoNm76ZOICs64b/zueS+AdROwNAoKQnMDniVKEMVgIsNLg3TAQ63jA4MAhPTNgs2ebi7u6utpxaEAPaOtYHM7JBSKyAru43YN2UG35SLvEJpwj+vr1q/z0aLI12KqKSP6FGolc3LEg6Gr8WenA8kqEF/TUDhZlK6sK7Pve3l5RhqeJ3x2LBiad/pb2lClTLB+fr6ioiHqxNdPBCoQgNU636uhtY7VdjG2ZDovHsogYhjGHHQsM4xIWEcO4hEXEMC5hETGMS1hEDOMSFhHDuIRFxDAuYRExjEtYRAzjEhYRw7iC6B+iyOEMIg5IoQAAAABJRU5ErkJggg==" style="width: 150px; height: 41px;" />

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Given the above factors, HCN is a polar molecule. This is because, in a linear molecule like hydrogen cyanide with different atoms on both ends, the bond dipoles do not cancel each other out. Instead, the molecule has an overall dipole moment different from 0 (𝜇 &ne; 0). The right part of the HCN molecule is partially positive-charged, whereas the left part is partially negative-charged.

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<img alt="HCN electrostatic map" src="data:image/png;base64,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" style="width: 180px; height: 83px;" />

Question

Is HCN Lewis structure polar or nonpolar

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