Chemistry, 27.06.2021 02:20 chaseashley24
A se ion has a mass number of 77
and a charge of −2
. Determine the number of neutrons, protons, and electrons in this ion.
Answers: 3
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Oil rich countries in the middle east cover about 4% of earths total land area but prossess about 48% of the worlds known oil reserves what is the main reason for high concentration of reserves in this part of the world
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How does water evaporating from a glass show that matter is made up of particles? a. the heat energy from the air causes the glass to fill up with water particles. b. the liquid water particles turn into water vapor that spreads in the air. c. the particles of the glass dissolve in water and cause it to evaporate. d. the tiny particles of the glass evaporate and seem to disappear.
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Which of the following elements would you expect to have the highest ionization energy value, and why? a. chlorine (cl), because it has a low effective nuclear charge and large radius b. fluorine (f), because it has a large radius and naturally forms a negative ion c. lithium (li), because it has a small radius and naturally forms a positive ion d. neon (ne), because it has a high effective nuclear charge and small radius
Answers: 2
A se ion has a mass number of 77
and a charge of −2
. Determine the number of neutrons, proto...
. Determine the number of neutrons, proto...
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