Chemical Bonding Questions and Answers

Match each molecular geometry with the approximate bond angle linear trigonal planar tetrahedral bent Choose Choose Less than 109 5 degrees 120 degrees 109 5 degrees 180 degrees

Match each description with the VSEPR molecular geometry All descriptions are of the regions around the central atom ER electron region ERG electron region geometry MG molecular geometry LP lone pair BA bonding area 1 BA between 2 atoms 4 ER as 2 LP 2 BA or 3 ER as 1 LP 2 BA 3 ER consisting of 0 LP and 3 BA 4 ER consisting of 1 LP and 3 BA 4 ER consisting of 0 LP and 4 BA Choose Choose linear bent tetrahedral trigonal pyramidal trigonal planar Choose

Questions 1 Explain why the CO molecule is linear instead of bent

The oxidation number of a chlorine atom is 1 True False

3 While both water and sulfur dioxide molecules have a bent geometry the bond angle in water is smaller 109 5 than that in SO 120 Using VSEPR theory suggest an explana tion for this

2 The molecule SF consists of six fluorine atoms bonded to a central sulfur atom See if you can come up with a geometry that would keep the fluorine atoms as far apart as possible Hint Think in three dimensions

ce the empirical formula for at least four ionic compounds that could be formed from the following ions 2 F NH CH CO C1O3

Consider the carbonate co a anion What is the central atom Enter its chemical symbol How many lone pairs are around the central atom 0 What is the ideal angle between the carbon oxygen bonds Compared to the ideal angle you would expect the actual angle between the carbon oxygen bonds to be X 0 choose one about the same bigger smaller G

Which of the following contains covalent bonds O BaO OlBr O Mg LiBr Eu

tep 2 Show the conversions required to solve this problem and calculate the grams of Cl 82 8 g AlCl3 x 26 98 g Al 1 mole Cl Answer Bank 1 mole Al 1 mole AlCl3 2 moles Al 3 moles Cl X 70 90 g Cl 133 33 g AICI 2 moles AICI g Cl

Based on electronegativity trends in the periodic table predict which of the following compounds will have the greatest ionic character in its bonds O H O Lil O Cao O RbF OHCI

Which of the following contains ionic bonding O CO O SrF2 O AI O OCI2 OHCI

Decide whether these proposed Lewis structures are reasonable proposed Lewis structure H 1 H N H H Br Z Z Is the proposed Lewis structure reasonable Yes No it has the wrong number of valence electrons The correct number is No it has the right number of valence electrons but doesn t satisfy the octet rule The symbols of the problem atoms are Yes No it has the wrong number of valence electrons The correct number is No it has the right number of valence electrons but doesn t satisfy the octet rule The symbols of the problem atoms are Yes No it has the wrong number of valence electrons The correct number is No it has the right number of valence electrons but doesn t satisfy the octet rule The symbols of the problem atoms are If two or more atoms of the same element don t satisfy the octet rule just enter the chemical symbol as many times as necessary For example if two oxygen atoms don t satisfy the octet rule enter 0 0 X

Draw the Lewis structure for vinyl iodide C H31 Be certain you include any lone pairs C C 101

Re 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 0 0 0 0 0 0 0 0 0 atoms or ions Be Li Be S CI S Cl Br I X 3

Below is the Lewis structure of the peroxide 0 ion 0 0 Count the number of bonding pairs and the number of lone pairs around the left oxygen atom bonding pairs lone pairs X 5

What is an attachment a A bond b A lone pair c Any connection of atoms d Bonds or lone pairs

What two things effect polarity on a molecule a Size and shape b Electronegativity and size c Electronegativity and shape d Shape and coldness

A polar molecule is a molecule a Which has an equal sharing of electrons and thus has charged ends b Which has an unequal sharing of electrons and is electrically neutral c Which has an equal and unequal sharing of electrons al aboring of electrons and thus has charged ends

a molecule has three connections and no lone pairs the 3D shape is a Tetrahedral b Trigonal pyrimidal c Triangular pyrimadal d Trigonal planar

If a molecule has the chemical formula C5H1005 it is a a Sugar b Nonpolar molecule c Fat

What does tetrahedral shape look like a A table b A tripod with a camera c A stick d A triangle

1 a molecule has four connections and no lone pairs the 3D shape is a Tetrahedral b Trigonal planar c Triangular pyrimadal d Linear

What is the molecule called when there equal pull of electrons a Polar b Unipolar c Nonpolar d Polarity

If a molecule has two connections and no lone pairs the 3D shape is a Bent b Trigonal planar c Triangular pyramid d Linear

How are tetrahedral trigonal pyramidal and bent similar a They aren t b They all have four attachments and have a tripod shape c They have center atoms that are can bond four atoms d They all have four attachments and are triangular in shape

What is a connection in a molecule a A single bond b Any type of bond single double or triple c Shared dots Another atom

What causes atoms in molecules to repel each other if they get to close a The protons getting too close together b Their smell c Their valence electrons d Interaction between electrons and protons

What does the bonding structure tell us a What a molecule looks like b The connectivity of atoms and the lone pairs c How big the molecule is d The Lewis dot representation

The atomic diameter of He is larger smaller the same Question 23 than the atomic diameter of Li Fill in the blanks e g larger smaller the same or whatever the answers requires 1 pts

What is a p orbital Edit View Insert Format Tools Table

ubstances K S H SO3 H SO4 Tap the arrows to set the value for the oxidation state of sulfur K S H SO3 H SO4

Chemistry there are specific rules for writing the formulas of ionic compounds having a given name One or more of hese formulas are breaking the rules Select all the rule breakers Tap to select or deselect an option Select all the rule breakers barium nitride Ba3N aluminum oxide Al3O2 calcium sulfide CaS Ta

omine and oxygen in the polyatomic ion BrO4 Tap the arrows to set the value for the oxidation state bromine oxygen

11 For each of the following sketch and label all possible stereoisomers a square planar Ni CN Br b PtBrCl NH3 2 c Co C O4 3 C O4 is oxalate d Ni en 2 NH3 2

substances N2 NO2 and AI NO3 3 Tap the arrows to set the value for the oxidation state of nitrogen N 1 NO AI NO3 3

substances Cl BaCl2 HCIO4 Tap the arrows to set the value for the oxidation state of chlorine Cl BaCl2 HCIO4 1 14 Tar

tuon hosphorus and oxygen in the polyatomic ion PO4 Tap the arrows to set the value for the oxidation state phosphorus oxygen

nd oxygen in the polyatomic ion C 04 Tap the arrows to set the value for the oxidation state carbon oxygen

You are a forensic investigator The data for a crime scene is in the following chart Soluble in water Soluble in oil Crime scene Yes powder No Conducts electricity when dissolved in water Yes Melting point high Which statement bests constructs an argument to identify the crime scene powder as one of the following KCI C10Hg C6H O6 The crime scene powder is C 0Hg because it conducts electricity has a high melting point and is soluble in water The crime scene powder is C10H8 or C6H O6 because both of these are soluble in water insoluble in oil conduct electricity and have high melting points The crime scene powder is KCI because it is the only ionic compound choice because KCI contains a metal and a nonmetal and the other 2 compounds do not contain a metal Only ionic compounds conduct electricity when dissolved in water so KCI is the crime scene powder The crime scene powder is C 0H8 or C6H O6 because both of these are covalent compounds because they don t contain a metal They are soluble in water and not oil because they are polar covalent Thus the crime scene powder is one of these two compounds

0 C 0 Consider the model shown above What type of bond is made by the elements and why The bond will be ionic because carbon is a nonmetal and oxygen is a nonmetal The formula will be CO2 because the charge on carbon is 4 and the charge on oxygen is 4 The bond will be ionic because both carbon and oxygen are nonmetals The formula will be CO because the electrons between the atoms are being shared unequally The bond will be covalent because carbon is a metal and oxygen is a nonmetal The formula will be C O because the charge on carbon is 4 and the charge on oxygen is 2 The bond will be covalent because both carbon and oxygen are nonmetals The formula will be CO2 because the electrons between the atoms are being shared equally

Which of these is a Lewis acid A Lewis base Select all that apply Clear All Lewis acid Lewis base 0 SO3

16 When Potassium is heated up a purple flame appears Explain what is happening to the electrons and why this phenomena occurs

C Does ICl3 function as a Lewis acid or base when it reacts with the chloride ion to form ICl4 I Lewis acid Lewis base neither Lewis acid nor Lewis base both Lewis acid and Lewis base

14 Fluorine wants 1 more valence electron to have a stable octet What energy level and sublevel will this electron go to

Clear All Lewis acid Clear All Lewis base CH3 2S g C Scoring Your score will be based on the number of correct matches minus the number of incorrect matches There is no penalty for missing matches Ag aq 2 SCN aq Ag SCN 2 aq Lewis acid BCls g Ag aq SON a

assify these substances as glucose C H O Molecular water H O of ionic sodium hydroxide NaOH Answer Bank methane CH silver nitrate AgNO Ionic barium sulfate BaSO

1 a Write the dot structure for grain alcohol C H6O This molecule has hydrogen bonding Molecules that are hydrogen bonding contain an O H N H or F H bond b Construct the molecular model for this molecule and then sketch it below next to the dot structure

2 The molecule PC1 F3 forms three isomers Two of these isomers have a dipole moment the center of positive and negative charge in the molecule do not coincide a Please construct the models for each isomer and sketch them below b Indicate which two isomers have a dipole moment

Classify each compound as ionic or molecular Ionic N