The Iron atom lost two electrons to become the Fe2+ ion. This is referred to as oxidation.
Probably its atomic number (proton number), because this is how they are arranged already.
Other factors are their form (metal/non-metal) etc., which determines how they react with each other and bond.
Another important factor is the number of electrons in their valent (outer) shell. This is because it tells use how the atom will react/bond with other atoms, how 'violent' that reaction will be, and whether it will bond at all (eg. nobel gases)
Answer: Any Alkali metal
Explanation:
T he cool thing about the periodic table is the way it is organized. You can find chemical with similar properties is just looking in the column they are in in to determine the answer. Since Na is in the first column, any of these answer can work:
Li, K, Rb, Cs, and Fr
Answer:
Polycrystalline cells are less expensive to make than single-crystalline modules but are also slightly less efficient than the single-crystalline (12% -15%). Also, it has been found that amorphous silicon cells dominate in warm, sunny conditions due to their lower power-loss temperature coefficient [1]
Explanation:
When building a bridge, engineers want the bridge cables to have great:
- Tensile strength has to do with the amount of stress that a thing is able to resist without breaking under legthwise stress.
- This is measured by the largest load (kg) per unit area as it refers to the amount of stress an object or material is <u>able to endure</u> without tearing apart or breaking off.
- As a result of this, when building a bridge, engineers want the bridge cables to have great tensile strength so that they do not collapse <em>under the weight</em> placed on them.
- A bridge is a passage or structure that <em>connects between two obstacles.</em> A lot of cars, heavy lorries and trucks pass through a bridge, so iit is important that the bridge cables are able to resist this stress effectively.
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- Therefore, the correct answer is tensile strength
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