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Chemistry, 21.06.2019 13:00
Read the given expression. x = number of protons β number of core electrons which of the following explains the identity of x and its trends across a period? x is the effective nuclear charge, and it remains constant across a period. x is the screening constant, and it remains constant across a period. x is the effective nuclear charge, and it increases across a period. x is the screening constant, and it increases across a period.
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Chemistry, 22.06.2019 02:30
Which element forms an ionic bond with flourine? 1) fluorine 2) carbon 3) potassium 4) oxygen
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Chemistry, 22.06.2019 07:30
Aradio signal from a gps satellite take only about 0.067 seconds to reach a gps reciever. if the speed of light is about 300,000km/s, then approximately how far away is the reciever from from the satellite?
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How does density differ from volume...
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