Answer:
Selenium
Explanation:
One way to figure this out is to count the electrons and add them up.
2+2+6+2+6+2+10+4 = 34 electrons
A neutral atom has the same number of electrons and protons. Protons tell us the atomic number of an element. Element number 34 is Selenium.
Another way to figure it out is to look at just the highest "s" or "p" level of the electron configuration, and then see which element corresponds to that. This element has a 4s and a 4p, so I will look at 4p. The configuration is 4p4, so I will look at the 4th row of the periodic table (4p4) in the "p" block (4p4) and the 4th element in the "p" block (4p4). That's selenium :)
Answer:
The chemistry student will need to weigh 74.0g of chloroform.
Explanation:
Density relates mass and volume and 1 cm⁻³ = 1 mL:
1.48 g of chloroform ____ 1 cm⁻³ chloroform
m ____ 50.0 cm ⁻³ chloroform
m = 74.0 g of chloroform.
Therefore, the chemistry student will need to weigh 74.0g of chloroform.
Answer:
The elements toward the bottom left corner of the periodic table are the metals that are the most active in the sense of being the most reactive.
Answer:
no one answered this so ima use it for points. im really sorry.