Answer: We will use the electron-dot structure to tell the reactivity of fluorine.
Explanation: Fluorine atom is the 9th element of the periodic table.
Atomic number: 9
Electronic configuration of fluorine = 
The number of valence electrons = 7
and the valency for this element = 1 (because this element requires only one electron to have a stable electronic configuration)
Electron dot structures are the structures which represent the valence electrons present around the nucleus of an atom. The dots in the structures represent the electrons.
Reactivity of an element is defined as its ability to gain or loose electrons easily.
As fluorine atom gains 1 electron easily, so it is very reactive.
Electron dot structure of fluorine atom is given in the image attached.
Zinc would be considered the strongest reducing agent.
<h3>Reducing agent</h3>
A reducing agent is a chemical species that "donates" one electron to another chemical species in chemistry (called the oxidizing agent, oxidant, oxidizer, or electron acceptor). Earth metals, formic acid, oxalic acid, and sulfite compounds are a few examples of common reducing agents.
Reducers have excess electrons (i.e., they are already reduced) in their pre-reaction states, whereas oxidizers do not. Usually, a reducing agent is in one of the lowest oxidation states it can be in. The oxidation state of the oxidizer drops while the oxidizer's oxidation state, which measures the amount of electron loss, increases. The agent in a redox process whose oxidation state rises, which "loses/donates electrons," which "oxidizes," and which "reduces" is known as the reducer or reducing agent.
Learn more about reducing agent here:
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Answer:
B
Explanation: Density by definition is the amount of matter per given volume.
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The process of changing solid to liquid is known as fusion
