Chemistry

Chemistry, 21.08.2019 05:00, ehazlitt

What is the maximum number of electrons on the sublevels: 3s, 3d, 4p and ,4f?

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Chemistry, 25.06.2019 20:50, evazquez

What does the aufbau principle suggest about electron configuration? a) electrons within the same atomic orbital have different spins. b) electrons occupy orbitals with the lowest energy first. c) filled sublevels are more stable than partially filled sublevels. d) no more than two electrons can occupy the same atomic orbital.

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Chemistry, 26.06.2019 23:50, gyliahicks

What does the aufbau principle suggest about electron configuration? filled sublevels are more stable than partially filled sublevels. electrons occupy orbitals with the lowest energy first. no more than two electrons can occupy the same atomic orbital. electrons within the same atomic orbital have different spins.

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Chemistry, 02.07.2019 15:30, Suttyyyyyybear9275

Which of the following is true regarding the inner transition elements? a. these include all elements in groups 3–12. b. they occupy the d block of the periodic table. c. these include the lanthanides and actinides and do not have f sublevels. d. their valence electrons can be located in both s and f sublevels.

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Chemistry, 07.07.2019 23:00, antonio9768

The elements in the modern periodic table are arranged according to their * 1 point atomic mass atomic number oxidation state nuclear mass #2 as the elements in group 15 are considered from top to bottom, which sequence in properties occur? * 1 point nonmetal --> metalloid --> metal metal --> metalloid --> nonmetal metalloid --> metal --> nonmetal metal --> nonmetal --> metalloid #3 which set of elements have similar physical and chemical properties? * 1 point carbon, nitrogen, oxygen helium neon, argon hydrogen, lithium, beryllium fluorine, chlorine, oxygen #4 which of the following best describes the element with atomic number 19? * 1 point metalloid located in period 1 high electronegativity none of the following describe element with atomic number 19 #5 for any representative element, its group number equals * 1 point the number of energy level (ex: group 1 elements all have electrons in the first energy level) the number of electrons (ex: group 1 elements all have one electron) the number of electrons in the highest occupied energy level (ex: group 1 elements all have one electron in the outermost energy level) the number of protons (ex: group 1 elements all have one proton) #6 analyze the orbital filling diagrams below. which diagram is filled incorrectly and which rule is being broken? * 1 point captionless image the first diagram is filled incorrectly because it violates the pauli exclusion principle. the second diagram is filled incorrectly because it violates hund's rule. the third diagram is filled incorrectly because it violates the aufbau principle. the fourth diagram is filled incorrectly because it violates the pauli exclusion principle. #7 how many protons, neutrons, and electrons are in an atom of fe-55? * 1 point 55 protons, 55 neutrons, 55 electrons 26 protons, 29 neutrons, 26 electrons 26 protons, 26 neutrons, 29 electrons 55 protons, 29 neutrons, 26 electrons #8 which best describes the principle energy level n=2? * 1 point it contains two sublevels, s and p, and can hold a maximum of 8 electrons. it contains two sublevels, s and d, and can hold a maximum of 32 electrons. it contains two sublevels, s and p, and can hold a maximum of 16 electrons. it contains two sublevels, s and d, and can hold a maximum of 2 electrons. #9 which of the following atoms require the least energy for the removal of the most loosely bound electron? * 1 point sn sr be br #10 when an excited electron jumps from the fourth to the second energy level, what type of electromagnetic radiation is emitted? * 1 point captionless image ultraviolet visible infrared not enough information #11 which of the following has the highest electronegativity and ionization energy, smallest radius and is classified as a halogen? * 1 point fluorine neon francium magnesium #12 using the graph below, what is the ionization energy of the noble gas? * 1 point captionless image 510 kj/mol 1600 kj/mol 2050 kj/mol 950 kj/mol #13 using the graph above, which required major part of the graph is missing? * 1 point independent variable dependent variable legend title

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