Answer:
I can't answer this as I am not able to read the Question
D. It is the heat required to change a gram of substance from a liquid to a gas.
Explanation:
The heat of vaporization is the heat required to change a gram of substance from a liquid to a gas.
- It is also known as the enthalpy of vaporization.
- The heat of vaporization is the quantity of heat needed to change one gram of a substance from liquid to gas.
- This heat of vaporization is dependent on the pressure conditions the process is taking place.
- Different liquids have their heat of vaporization.
learn more:
Heat of vaporization brainly.com/question/9529654
#learnwithBrainly
Whether an element is classified as a major or as a trace mineral is determined by
"<span>
the amounts daily required by the body".
</span>
Calcium, magnesium,
phosphorus, potassium, chloride and sulfur are all examples of the major
minerals and these are the minerals a body needs in large quantity as opposed
to include iron, copper, zinc, manganese, fluoride, selenium and cobalt, which
are all trace minerals and are needed in very little quantity.
<span> </span>
Orbital diagram:

<h3>Explanation</h3>
Fluorine F is found in the second column from the right end of a modern periodic table. Fluorine is next to and on the left of the noble gas element neon. A neutral fluorine atom is one electron short of neon, which contains 8 electrons in the outermost shell when neutral. As a result, there are 7 electrons in the outermost shell of a fluorine atom.
Fluorine is in period 2. Its electrons occupy two main shells. The second main shell is the outermost shell of F. There are two subshells in the second main shell:
- 2s, which holds up to two electrons, and
- 2p, which holds up to six electrons.
A 2s electron carries less energy than a 2p electron. By Aufbau principle, the seven electrons will fill the two spaces in 2s before moving on the 2p. Among the 7 outermost shell electrons,
will end up going to 2p.
The only 2s orbital is filled with two electrons. The two 2s electrons will pair up with opposite spins, as seen with the two arrows. Two of the 2p orbitals will contain two electrons. Those electrons will also pair up. The third 2p orbital will contain only one electron. That electron can spin either
or
. Here that electron is shown as an upward arrow.