Chemistry, 15.12.2020 21:20, kyracrapse121
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A mystery element has 18 protons. Which one of the following statements is true about the element?
The element belongs in row 2 of the periodic table and is classified as a halogen.
The element belongs in row 3 of the periodic table and is classified as a noble gas.
The element belongs in row 4 of the periodic table and is classified as an alkali metal.
The element belongs in row 5 of the periodic table and is classified as an alkaline earth metal.
Answers: 3
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Find the protons, electrons and neutrons for strontium with a mass of 83
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Chemistry, 22.06.2019 09:30, psychocatgirl1
Which ocean zone has the most abundant primary producer and why a) the abyssopelagic zone ,du to the absence of light and cold water temperatureb) the bathypelagic zone, due to the absence of light and cold water temperaturec) the mesopelagic zone ,due to uts high light availability and warm water temperature d) the epipelagic zone, due to its high light availability and warm water temperature
Answers: 3
Chemistry, 23.06.2019 05:30, zeesharpe05
If c + di is a point on the circle, then | c + di |=
Answers: 2
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A mystery element has 18 protons. Which one of the following...
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A mystery element has 18 protons. Which one of the following...
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