Chemistry, 26.06.2019 14:30 bhjbh7ubb

Calcium, magnesium, and strontium are near each other on the periodic table and have some characteristics in common, but they differ in chemical reactivity. which lists these metals in order from most reactive to least reactive? calcium, magnesium, strontium magnesium, calcium, strontium strontium, calcium, magnesium strontium, magnesium, calcium

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Answer from: proxydayz

Strontium, Calcium, Magnesium

Strontium is the most reactive of the three element because of this, it does not exist free in nature but rather exist in combination with other elements in various compounds such as strontianite. Calcium is more reactive than magnesium because it is larger than magnesium and thus, it is more electropositive in nature.

Answer from: pepethefrog3

The correct answer is strontium, calcium, magnesium.

Explanation:

Reactivity is defined as the tendency of an atom to loose or gain electrons.

The reactivity of metal decreases as we move from left to right in a period and increases as we move from top to bottom in a group.

The given elements are metals and they belong to group 2 of the periodic table.

Calcium belongs to Period 4 of the periodic table, magnesium belongs to Period 3 of the periodic table and strontium belongs to Period 5 of the periodic table.

Strontium will be more reactive than calcium and it will be more reactive than magnesium.

Order of reactivity of metals follows:

$\text{Strontium}\text{Calcium}\text{Magnesium}$

Hence, the correct answer is strontium, calcium, magnesium.

Answer from: Quest

every chemical equation adheres to the law of conservation of mass, which states that matter cannot be created or destroyed. therefore, there must be the same number of atoms of each element on each side of a chemical equation.

Answer from: Quest

substituting a hydrogen atom with a halogen in a hydrocarbon:

- the single bond remains single. a is wrong.

- the bond with hydrogen is as strong as with a halogen. c is wrong

- a hydrocarbon is saturated if there is no double bond. we do not know that so d is wrong.

- carbon will always have four valence electrons. e is wrong.

by elimination, the correct answer is b. the boiling point of the new compound increases.

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