Chemistry, 09.09.2020 14:01 terryg4397
How do we know whether an element is a metal or a non metal from its atomic number? 1;f the valence electron number is either 1,2 or 3 then it is a Non Metal and if the valence electron number is either 4,5 or 6 then it is a Metal 2:If the valence electron number is either 1,2 or 3 then it is a Metal and if the valence electron number is either 5,6 or 7 then it is a Non Metal 3:if the valence electron number is either 1,2 or 3 then it is a Metal and if the valence electron number is either 4,5 or 6 then it is a Non Metal
Answers: 1
Chemistry, 21.06.2019 14:30
Which is true of the reactants in this displacement reaction? fe + 2hcl fecl2 + h2 a. the reactants are located to the left of the arrow in the chemical equation. b. the reactants contain 1 iron atom, 2 hydrogen atoms, and 1 chlorine atom. c. the reactants are the atoms, molecules, or compounds formed in the reaction. d. the reactants have the same physical and chemical properties as the products.
Answers: 1
Chemistry, 21.06.2019 22:30
Llama have 74 chromosomes how many chromosomes will they be found in their gametes explain how you know
Answers: 2
Chemistry, 22.06.2019 18:20
Which reason best explains why metals are malleable? a)because they have delocalized electrons b)because they have localized electrons c)because they have ionic bonds d)because they have rigid bonds
Answers: 2
Chemistry, 23.06.2019 03:20
High-pressure liquid chromatography (hplc) is a method used in chemistry and biochemistry to purify chemical substances. the pressures used in this procedure range from around 500 kilopascals (500,000 pa) to about 60,000 kpa (60,000,000 pa). it is often convenient to know the pressure in torr. if an hplc procedure is running at a pressure of 1.03×108 pa , what is its running pressure in torr?
Answers: 3
How do we know whether an element is a metal or a non metal from its atomic number? 1;f the valence...
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