Anion Size
Anion Size - Related Videos
02:38
Anion Exchange Resin–Based Detection of Viruses from Bioaerosols
0 Views •
2026
Source: Schaeffer, J. W., Chandler, et al. Detection of Viruses from Bioaerosols Using Anion Exchange Resin. J. Vis. Exp. (2018).This video demonstrates the detection of viruses from bioaerosols using an anion exchange resin. A liquid impinger containing the resin is used to capture viruses from the air. The resin is collected and treated with a virus lysis buffer containing carrier RNA. The lysate is transferred to a microcentrifuge tube for viral RNA isolation, followed by qRT-PCR to amplify...
01:25
The Anchoring-and-Adjustment Heuristic
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2020
In order to make good decisions, we use our knowledge and our reasoning. Often, this knowledge and reasoning is sound and solid. However, sometimes, we are swayed by biases or by others manipulating a situation. For example, let’s say you and three friends wanted to rent a house and had a combined target budget of $1,600. The realtor shows you only very run-down houses for $1,600 and then shows you a very nice house for $2,000. Might you ask each person to pay more in rent to get the $2,000...
01:12
Adjusting a Traverse
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2025
In the site survey of a four-sided traverse, internal angles are essential to ensure geometric accuracy. The survey revealed that the sum of the measured internal angles was 359 degrees and 48 minutes, which is 12 minutes less than the expected 360 degrees. This discrepancy signals an error likely arising from measurement inaccuracies during the fieldwork.To rectify this error, the adjustment process involved distributing the 12-minute shortfall equally across the four internal angles. By...
01:27
Adjusting Entries
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2025
In accounting, a business's economic activities are segmented into designated time intervals, typically monthly, quarterly, or annually, known as accounting periods. This segmentation facilitates consistent tracking, summarization, and reporting of financial data, enabling stakeholders to accurately evaluate a company's performance and financial position. Companies must incorporate adjusting entries at the close of each period to ensure that financial reports conform to the accrual basis of...
01:16
Price Adjustment Strategies I
0 Views •
2024
Price adjustment strategies refer to how companies modify their basic prices to account for customer differences and changing market conditions. These include: Discounts: Offering temporary reductions can incentivize purchases, reward customer loyalty, and clear out inventory—for example, seasonal or clearance sales by an apparel retailer. Trade-in allowances: These lower the purchase price for customers who trade in an old item, stimulating new sales. For example, Apple offers trade-in...
FAQs
Adding electrons increases electron–electron repulsion within the occupied electron cloud. The added negative charges spread out against one another, producing a larger spatial extent than the corresponding neutral atom generally has. This expansion helps explain why electron gain changes ionic packing and influences how anions fit into chemical compounds and solid structures.
In an isoelectronic series, the ions contain the same number of electrons, so differences in size mainly reflect nuclear charge. A greater positive charge pulls the shared electron cloud inward more strongly, producing a smaller anion. This comparison isolates the effect of nuclear charge and provides a useful way to rank related ionic radii.
Anions generally become larger down a group because each successive element has additional occupied electron shells. These added shells extend the electron cloud farther from the nucleus, increasing the measured ionic radius. The trend complements the effect of electron–electron repulsion and helps explain systematic changes in ion packing and substitution across related compounds.
Chemists compare ionic radii by first considering periodic position and then identifying whether the ions belong to an isoelectronic series. Down-group comparisons emphasize added electron shells, whereas isoelectronic comparisons emphasize nuclear charge. Using both patterns provides a structured approach for interpreting relative size rather than treating each anion as an isolated case.
Anion size affects how ions pack together in a crystal and therefore helps predict aspects of crystal structure. Because lattice energy is also related to ionic arrangements, radius comparisons provide context for understanding differences among compounds. Size differences can alter the spatial fit of ions, influencing the stability and character of the resulting solid.
Anion size contributes to how ions behave in solution, including their hydration and solubility. Comparing radii helps chemists interpret how negatively charged ions interact with surrounding solvent and with other ions in a compound. These size-based comparisons do not replace experimental measurements, but they provide a framework for relating ionic dimensions to solution behavior.
Differences in anion size influence ion packing and determine whether one ion can substitute for another in minerals and other materials. Size comparisons therefore help interpret compositional variation and structural organization. In chemistry, this connects a periodic property to larger-scale material behavior, including crystal arrangements and the accommodation of chemically related ions.