Atomic structure Questions and Answers

7 Enter your answer in the provided box What is the maximum number of electrons that can be contained in a second she electrons

4 Be sure to answer all parts Complete the following table for the neutral element Element Symbol Atomic Number 54 Mass Number 128 Number of Protons Number of Neutrons Numbe of Electre

Write the shorthand electron configuration for plutonium

Calculate the average atomic mass of iron using the isotopes from the following table Isotopic Mass amu 53 9396 55 9349 Isotope 54 Fe 56Fe Natural Abundance 5 82 91 66

6 pts Calculate the wavelength of the light emitted in the transition Speed of light 3 0 x108 m s

Sr 90 has Select Select the same number of more neutrons than Y 91

The number of emission lines that an atom exhibits depends on t numbers and masses of photons in the atom numbers and arrangements of photons in the atom numbers and masses of electrons in the atom numbers and arrangements of electrons in the atom

Alkynes are compounds with at least one triple bond True False

Calculate the change in energy of an electron in a hydrogen atom that transitions from n 3 to n Use RH 2 18 x 10 18 J for the Rydberg constant Select the correct answer below O 1 550 x 10 19 J O 8 716 x 10 20 J O 1 550 x 10 19 J 8 716 x 10 20 J G

Who discovered the gas law represented in the figure below Volume L Avogadro O Boyle O Charles O Darwin O Torricelli Temperature K

The electronic structure 1s22s22p63s23p64s23d8 refers to the ground state of O Kr O Ni Fe O Pd Onone of these choices is correct

Which of the following elements has the greatest atomic radius O Li O Ne O Rb O Sr Xe

Select the element whose Lewis symbol is correct a Fr O a O b O C O d Oe b Ra C Pb d Te e He

How many grams of sodium will react with water to produce 4 00 moles of hydroge in the following reaction 2 Na 2 H O 2 NaOH H

Dalton s Law of Partial Pressures Earth s atmosphere consists of 78 N and 20 O2 and 2 other gases What is the partial pressure of N2 and O2 in atm and torr when the atmospheric pressure is 1 00 atm Answer in 3 significant figures

A metal has a body centered cubic lattice with a unit cell edge length of 2 866 1 10 0 m The density of the metal is 7 87 g cm What is the mass of an atom of this metal in grams

Match each isotope with the correct number of neutrons Nitrogen 14 Oxygen 18 Fluorine 17 Neon 22 Beryllium 9 Choose Choose 10 12 5 8 6

of the same element must have different numbers of neutrons O isotopes Oions O electrons O valences O electron orbitals shells

Consider this ionic isotope The identity of the element is missing 22 Which three statements are true It s a cation It s yttrium The mass number is 20 It has gained two electrons It has more than 17 neutrons It s calcium O The nuclear charge is 39 It s an anion

answer the next two questions Question 5 What is the wavelength in meters of radiation for this transition Report answer to 2 sig figs without units 20 0 2 p Question 6 0 1

order each list in the table below if necessary so that the atoms or ions in it are listed in order of decreasing size atoms or ions in order of decreasing size On atoms or ions Be F Li Ar Cl Cl Br F Cl 0 0 0 0 0 0 0 0 0 X C

Be sure to answer all parts How many protons and neutrons are contained in each of the three isotopes of carbon 12 6 13 C 6 14 6 C protons select neutrons select protons select neutrons select protons select neutrons select

If a molecule has three connections and has one lone pair the 3D shape is a Tetrahedral b Trigonal planar c Triangular pyramidal

The diameter of the S2 ion is larger smaller the same atom Question 25 than the diameter of the Na Fill in the blanks e g larger smaller the same or whatever the answers requires 1 pts

How many milliliters of a 2 35 M LiCl solution contain 17 3 g of LiC Express your answer with the appropriate units H

What are the quantum numbers for the elements in the 3d block

What is an s orbital Edit View Insert Format Tools Table

What does the quantum number n represent

List these electron subshells in order of increasing energy 6s 4f 6p 5p Note for advanced students you may assume these subshells are all in an atom with many electrons not a hydrogen atom 0 0

4 The atoms of the elements in Group 2 have the same 1 mass number 2 atomic number 3 number of protons 4 number of valence electrons

15 a Write out the linear electron configuration and noble gas abbreviation for a Bromine Ion b Explain why a bromine ion is stable A broming on

Give the nuclear symbol for the isotope of gallium Ga that contains 40 neutrons per atom Replace the question marks with the proper integers I

Determine the frequency associated with the photon associated with this wavelength b Determine the amount of energy released by this photon c The Balmer series are the results of excited electron at higher level relaxing to the electronic level of principle quantum number of ny 2 Determine the excited electronic level n of this electron If this excited electron has the same wavelength as the emitted photon determine its speed during the

b Ions 9F 13A1 168 20Ca write Ex elee

Students completed a flame test lab and recorded their results in the data table below Compound Potassium chloride Sodium chloride Lithium chloride Calcium chloride Unknown Color Lavender Yellow orange Red Orange Red Which of the following choices best explains why the students were able to identify the unknown as lithium chloride The students observed the solution before it was put into the flame and realized it was similar in texture and color to the lithium chloride the teacher showed them When they saw that both lithium chloride and the unknown produced a red flame they were sure that the unknown must have been lithium chloride as well The students used heat to add energy to the electrons in the lithium chloride The addition of energy caused electrons in the various energy levels to jump to higher energy levels When the electrons returned to the ground state the

Select the model below that is best able to show only the number of high energy electrons in the valence shell of an atom Atom Model A C D A D B Description Nucleus is in the center of the atom and electrons are in a cloud around the nucleus Atom is positively charged with negatively charged particles floating around Protons and neutrons in the center with s p sublevel electrons in fixed orbits on the outside Some positive charge in the center with negative particles on the outside

The complete photoelectron spectrum for the element chlorine is represented below Peak X in the spectrum corresponds to the binding energy of electrons in a certain orbital of chlorine atoms The electrons ini this orbital of chlorine have a binding energy of 272 MJ mol while the electrons in the same orbital of sulfur atoms have a binding energy of 239 MJ mol Relative Number of Electrons 1000 X 100 10 Binding Energy MJ mol 0 1 a Identify the orbital and explain the difference between the binding energies in terms of Coulombic forces b Peak Y corresponds to the electrons in certain orbitals of chlorine atoms On the spectrum shown carefully draw the peak that would correspond to the electrons in the same orbitals of sulfur atoms

10 In terms of Coulombic attractions explain the differences in the following two sets of lattice energies for the following ionic compounds a CaF CaO b NaBr LiCl H A B C D H H H Before sp sp sp sp 2635 kJ mol 3385 kJ mol 751 kJ mol 861 kJ mol 03 41 11 In the reaction repr nted above what is the hybridization of the C atoms before and after the reaction occurs After sp sp sp sp H H

What is the maximum number of electrons a single d orbital can hold Enter only a number in the space provided

What volume will 50 0 g of nitrogen gas occupy at 2 0 atm of pressure and at 65 C PV nRT R 0 0821 L atm mol K

The electron configuration 1s22s22p63s 3p4 refers to sulfur S O phosphorus P aluminum ion Al chloride ion Cl sulfide ion S

Which atom has the largest radius OH O He COI O Pb O Cs

wo sets of ionizations are shown in the tables below Complete the tables by ordering each set of ionizations by increasing amount of energy required n other words for each set choose 1 next to the ionization that would require the least energy 2 next to the ionization that would require the next lea nergy and so on ionization Fr Fr e C C e He He e energy required C C C Cs ionization Cs e Ga Ga e S S e 6 energy required C C C

1 point Isotopes are atoms of the different elements that have the same mass True False

1 point Neutron and proton have about the same mass True False

Molecular Orbital Diagram Construct MO diagrams for the following species and answer the questions 02 0 02 2 2 1 point Which species is diamagnetic

The molecular geometry of the NH3 molecule is best described as T shaped Square Planar Bent Square Pyramidal Trigonal Pyramidal

Fill in the information missing from this table nuclide 0 65 29 Cu protons 0 23 0 neutrons 27 Z 65 0 0 A 159 0 0 X

Fill in the information missing from this table nuclide 00 0 101 44 Ru protons 51 0 0 neutrons 70 0 0 Z 57 0 A 139 0 X

Fill in the blanks e g larger smaller the same or whatever the answers requires The atomic diameter of He is larger smaller the same than the atomic diameter of Li