2-8-18-6 is the electron configuration. not sure what the other person was saying lol
For a sound wave traveling through air, the vibrations of the particles are best described as longitudinal<span>. </span>Longitudinal<span> waves are waves in which the motion of the individual particles of the medium is in a direction that is </span>parallel<span> to the direction of energy transport.
Im not sure. but ur welcome. ☺</span>
Answer:
option B = lower left of the periodic table
Explanation:
The most reactive metals are located at the bottom left corner of periodic table. These metals are reactive in the sense that they can react with water very easily.
Examples include lithium, sodium potassium. As we move down the group in this column metallic character increase. Their atomic radius also increases and electron can easily donated. which means metals became more reactive.
These metals can also react very easily with O2 in atmosphere that's way these are stored in inert atmosphere. The most reactive metal in periodic table is francium.
I would put yes as in California the dui is .08 or above
Use the atomic mass of potassium, k, 39.1 g/mol, and the formula n = mass / atomic-mass.
Where n is the number of moles.
n = 250.0 g / 39.1 g/mol = 6.3939 mol.
Now multiply by Avogadro number to find the number of atoms:
6.3939 mol * 6.02*1023 atoms/mol = 38.49 * 10^23 atoms = 3.849 * 10^24.
Answer: 3.85*10^24