Chemistry, 14.11.2019 22:31 pheonixhowls
State hund's rule.
choose one:
a. an attraction between two electrons occurs due to vibrations in the crystal lattice.
b. each electron goes into the lowest-energy orbital available.
c. the lowest-energy electron configuration of an atom has the maximum number of unpaired electrons, all of which have the same spin, in degenerate orbitals.
d. we cannot determine both the position and the momentum of an electron in an atom at the same time.
e. no two electrons in an atom can have the same set of four quantum numbers. f. electrons orbiting and protons within the nucleus of the atom have a balanced charge, excluding attraction to charged species.
Answers: 3
Chemistry, 22.06.2019 12:00
An atom's configuration based on its number of electrons ends at 3p4. another atom has seven more electrons. starting at 3p, what is the remaining configuration? 3p63d34s2 3p43d54s2 3p64s23d3 3p44s23d
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Chemistry, 22.06.2019 23:00
Consider the reaction: 2al(s) + fe2o3(s) → al2o3(s) + 2fe(s) the δhf for fe2o3(s) = -824.3 kj/mole. the δhf for al2o3(s) = -1675.7 kj/mole. finish the equation. δhrxn = [(1)( kj/mole) + (2)( kj/mole)] - [(1)( kj/mole) + (2) ( kj/mole)]
Answers: 1
Chemistry, 22.06.2019 23:10
Afusion reaction takes place between carbon and another element. neutrons are released, and a different element is formed. the different element is a) lighter than helium.b)heavier than helium.c)the same weight as helium.d)dependent on the element that reacted with carbon.
Answers: 3
Chemistry, 23.06.2019 00:30
There are approximately 15 milliliters (ml) in 1 tablespoon (tbsp). what expression can be used to find the approximate number of milliliters in 3 tbsp?
Answers: 1
State hund's rule.
choose one:
a. an attraction between two electrons occ...
choose one:
a. an attraction between two electrons occ...
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