Chemistry, 19.10.2019 04:30 letdou2670
1.which best explains why ionization energy tends to decrease from the top to the bottom of a group?
a. the number of orbitals decreases.
b. the number of neutrons decreases.
c. electrons get closer to the nucleus.
d. electrons get farther from the nucleus.
3.when electrons are removed from the outermost shell of a calcium atom, the atom becomes
a. an anion that has a larger radius than the atom.
b. an anion that has a smaller radius than the atom.
c. a cation that has a larger radius than the atom.
d. a cation that has a smaller radius than the atom.
Answers: 3
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In a popular classroom demonstration, solid sodium is added to liquid water and reacts to produce hydrogen gas and aqueous sodium hydroxide. part a write a balanced chemical equation for this reaction. express your answer as a chemical equation. identify all of the phases in your answer.
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Which statement describes covalent bases? they have hydroxide ions. they produce hydrogen ions. they are often amines. they are named the same as ionic compounds.
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Diffraction is when light is bent around obstructions. which of the these observation about clouds would indicate diffraction? a) after rain storms, you can sometimes see rainbows. b) clouds are white or gray and cannot be seen through. c) on a cloudy day, the temperature tends to be cooler than a sunny day. d) the edges of dark clouds appear lighter. this
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1.which best explains why ionization energy tends to decrease from the top to the bottom of a group?...
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