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Chemistry

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Xander Weimann

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2y ago
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Cards in this guide (8)
How do you know that a bond between magnesium and chlorine will be ionic

The difference in electronegativity between the two atoms is above 1.7, Magnesium is a metal, and chlorine is a nonmetal.

Maxwell a Russian scientist created an early periodic table of elements

false

Atoms with a low ionization energy hold tight to their outer valence electrons

No; the phrase given characterizes high rather than low ionization.

Polyatomic ions always carry a positive charge

false

Who listed the elements in a table accourding to their atomic masses

Mandeleev who predicted periodic table.

Which one of the following is a common acid soap aspirin antacid and washing soda

Aspirin

Which one of the following is a balanced equation

2NH3(g) + 3Mg(s) —> 3H2(g) + Mg3N2(s)

The change that takes place when two or more substances what to form new substances is called a chemical reaction

(Apex) interact

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