23, and so onWhich of the following was one of Empedocles elements (from ancientGreece)?"WaterO SmokeO LavaO MudNextClearThis torm was created inside of Fullerton Joint Union High School District. Report Abuse What is the proper order (from earliest to latest) for the discovery of themodels of the atom?*Rutherford, Democritus, DaltonDalton, Democritus, RutherfordDemocritus, Rutherford, DaltonRutherford, Dalton, DemocritusDalton, Rutherford, DemocritusDemocritus, Dalton, RutherfordWhich of the following is NOT a part of John Dalton's model of the atom?Atoms of the same element are all alike in mass, shape, and size

According to the greek philosopher , Empedocles , all matters was generally composed from four…

Answered: 23, and so on Which of the following…

Introductory Chemistry: A Foundation

9th Edition

ISBN:9781337399425

Author:Steven S. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Donald J. DeCoste

Chapter4: Chemical Foundations: Elements, Atoms, And Ions

Section: Chapter Questions

Problem 16ALQ

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The compound hexaazaisowurtzitane is one of the highest-energy explosives known (C E News, Jan. 17, 1994, p. 26). The compound, also known as CL-20, was first synthesized in 1987. The method of synthesis and detailed performance data are still classified because of CL-20s potential military application in rocket boosters and in warheads of smart weapons. The structure of CL-20 is In such shorthand structures, each point where lines meet represents a carbon atom. In addition, the hydrogens attached to the carbon atoms are omitted; each of the six carbon atoms has one hydrogen atom attached. Finally, assume that the two O atoms in the NO2 groups are attached to N with one single bond and one double bond. Three possible reactions for the explosive decomposition ofCL-20 are i. C6H6N12O12(s)6CO(g)+6N2(g)+3H2O(g)+32O2(g) ii. C6H6N12O12(s) 3CO(g) + 3CO2(g) + 6N2(g) + 3H2O(g) iii. C6H6N12O12(s) 6CO2(g) + 6N2(g) + 3H2 (g) a. Use bond energies to estimate E for these three reactions. b. Which of the above reactions releases the largest amount of energy per kilogram of CL-20?
Before the element scandium was discovered in 1879, it was known as “eka-boron.” Predict the properties of scandium from averages of the corresponding properties of its neighboring elements in the periodic table. Compare your predictions with the observed values in Appendix F.
Compared to their neutral atom counterparts, ions will have smaller or larger atomic radii due to their losing or gaining electrons. According to Jensen (2010), Linus Pauling assigned the radius of the oxygen anion (O“) at 140 pm (larger than the neutral atom, 66 pm). On the other hand, the magnesium atom loses 95 ppm from its 160 ppm radius when it loses two valence electrons, forming the magnesium ion. Determine the value of constant B wen constant n is approcimately 8. Unit is in N-m9
The maximum number of valence electrons that any element in the periodic table may have is eight. True or False?
Point out the main ideas in the discovery of the structure of the atoms and their sub-atomic particles.Give at least 10 sentences
Chlorine is much more likely to exit as a negative ion than sodium. This is because A. Sodium is a solid and chlorine is a gas B. chlorine has a grater electronegatively than sodium C. sodium is a larger atom than chlorine D. chlorine has agreater ionnization energy than sodium
The element D has atomic number which is greater by one than that of C. Write the formulae of its chloride What will be the most likely physical state of the chloride? Explain your answer.
When cesium reacts with chlorine to form an ionic compound, each metal atom loses ____ electron(s) and each nonmetal atom gains ___ electron(s). There must be___ cesium-atom(s) for every___ chlorine atom(s) in the reaction.
Answer and explain it in haFor each of the following chemical symbols, determine the number orelement symbol that goes in the appropriate position.The ion of this atom has 36 electrons. What should go in position Z?
Which of the following of Dalton’s proposals proved to be invalid? (a) Atoms are indestructible. (b) Atoms of the same element are identical. (c) Atoms can combine in more than one whole number ratio.
We learned about three different models describing a stable atom. Inthree to five sentences, answer the following questions. Use any figures or sketchesif necessary.a) Describe why the Rutherford’s planetary model is wrong.b) What is the basic hypothesis to solve for the Bohr model?c) What is the major limitation of the Bohr model and why?d) Without doing any calculation, briefly state how one can solve theSchrödinger equation for a hydrogen atom?e) Briefly describe how can one use the solved electronic wavefunctionfor a hydrogen atom?
X=[Ar]4s23d5X=[Ar]4s23d5, Y=[Ar]4s23d104p1Y=[Ar]4s23d104p1, Z=[Ar]4s23d104p6 metal non metal or metalloid

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23, and so on Which of the following was one of Empedocles elements (from ancient Greece)? Water O Smoke O Lava O Mud Next Clea