Chemical Formula for Sodium Chloride @wbreslyn

Uploaded September 2024 | Updated September 2026, 2 weeks ago

In this video, we'll write the correct formula for Sodium chloride (NaCl).

To write the formula for Sodium chloride, we’ll use the Periodic Table and follow some simple rules.

Keys for Writing Formulas for Binary Ionic Compounds:

Write the symbols for each element.
Find the charge for each element using the Periodic Table. Write it above each element. For help finding charge, watch: youtu.be/N4N1Njh7nCo.
See if the charges are balanced (if they are, you're done!).
Add subscripts (if necessary) so the charge for the entire compound is zero.
Use the crisscross method to check your work.
Notes:

Don’t write the subscript '1'.
If you use the crisscross method and end up with something like Ca₂S₂, you'll need to reduce the subscripts to Ca₁S₁, which we write as CaS.

$Convert 2.5 L to mL (2.5 Liters to Milliliters) To convert 2.5 liters (L) to milliliters (mL), you can use the following steps. Note that the L will cancel out as you perform the conversion, leaving only mL: Conversion Factor: 1 liter (L) = 1000 milliliters (mL) Start with the quantity you want to convert (2.5 L) and set up a ratio where the original unit (L) is in the denominator and the target unit (mL) is in the numerator, using the conversion factor: Conversion factor: 1000 mL / 1 L Write the quantity you want to convert (2.5 L) as a fraction over 1: 2.5 L / 1 Multiply this fraction by the conversion factor: (2.5 L / 1) * (1000 mL / 1 L) Notice that the units of liters (L) in the numerator and denominator cancel out, leaving only the units of milliliters (mL): (2.5 * 1000) / (1 * 1) mL = 2500 / 1 mL = 2500 mL So, 2.5 L is equivalent to 2500 milliliters. The units of liters cancel out during the conversion process, leaving only milliliters as the final unit.$

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