Biology

Biology, 14.10.2019 12:30, viktoria1198zz

Acompound will have a covalent structure if it is made from?
a. only metals.
b. an alkali metal.
c. only non-metals .
d. a metal with one or more non-metals.

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Chemistry, 16.07.2019 11:30, gymnastlyfe123

How do the alkali metals differ from the alkaline earth metals? a.alkali metals are much less reactive than alkaline earth metals. b.alkali metals are much harder than the alkaline earth metals. c.alkali metals exist in pure form; alkaline earth metals appear in nature as compounds. d.alkali metals have one valence electron and alkaline earth metals have two.

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Which statement best describes how alkali earth metals react with water? a. most alkali earth metals react with cold water. b. all alkali earth metals do not react with any type of water. c. all alkali earth metals react strongly with water at room temperature. d. most alkali earth metals react with hot water. i got this wrong the first time so its not c. it's a little confusing so if someone could that'd be great. here's where i'm supposed to get my alkali earth metals - the elements in group 2 of the periodic table are named the alkali earth metals. an atom of an element in this family has two electrons in its valence shell and tends to form 2+ cations through chemical reactions. beryllium (be), which is at the top of the group, will not react with water. magnesium (mg), however, will react with hot water. the rest of the group naturally reacts with water at any temperature, hot or cold. also, these elements are much harder than the alkali metals.

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Which of the following statements about alkali metals is true? alkali metals have full valence shells alkali metals form 1- cations alkali metals are very reactive alkali metals form 2- cations

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Acompound will have a covalent structure if it is made from?
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