Although both molecules have 4 F atoms each, SeF4 has _______________ electron group geometry, _________________ molecular geometry and is _____________________, whereas XeF4 has ____________________ electron group geometry, _____________________
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1. Although both molecules have 4 F atoms each, SeF4 has _______________ electron group geometry, _________________ molecular geometry and is _____________________, whereas XeF4 has ____________________ electron group geometry, _____________________ molecular geometry and is ______________________.
CHOICES:
- nonpolar
- trigonal bipyramidal
- polar
- seesaw
- square planar
- octahedral
2. Match the formula with the approximate bond angle around its central atom
- ClF3
- NO2-
- NH3
3. How many of the following have five (5) electron groups around the central atom?
BrF5, PCl5, ClF3, XeF2
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- Give the total number of valence electrons in the following molecule. a. NF3 b. SiH4 c. C₂H6 d. SF6 valence electrons valence electrons valence electrons valence electronsII. Complete the table below. Compound Molecular Geometry Molecule Polarity 1. НCСI 2. H2S 3. CH4 4. N2 Dipole moment of CO2 5. Н2О Take note that bond polarity and molecule polarity are not the same. The presence of polar bonds does not automatically make a molecule polar. The geometry of the molecule also plays an important role. This can be seen in CO2 wherein the electronegativity difference of C and O is 1.0. This equal distribution of polar bonds makes the molecule non- polar.CHEMICAL BONDING A. Write the ionic-bond structure of the following compounds. Bal2 Ca3P2 SrSe B. Using the Pauling scale, determine the electronegativity difference to determine the kind of bond present in each compound. Compound Electronegativity Kind of Bond 1st Atom 2nd Atom Difference KI XeF2 BH3 ClO2 NiS C. Draw the Lewis electron dot structure and predict the shape of the following compounds/polyatomic ions. Molecule Total no. of e- Lewis structure Bonding Pairs Lone Pairs Geometry BrF3 PH3 PO3-3
- 1-What is the formal charge of the nitrogen atom in hydrogen cyanide (HCN)? a.5 b.−1 c.0 d.1 e.2 2-Which of the following diatomic molecules has the least number of valence electrons? a.N2 b.F2 c.O2 d.Cl2 e.NOThe first step in drawing a Lewis structure is to count the total number of valence electrons in the molecule. How many total valence electrons are present in the CH3CI molecule O 10 O 12 O 14 O 16 5 6 7 8 10 11 12 13 DELL -> C * & C@ 23 %24 7 2 u y e k d. f * 00 くODecide whether these proposed Lewis structures are reasonable. proposed Lewis structure Is the proposed Lewis structure reasonable? Yes. No, it has the wrong number of valence electrons. Н— Br The correct number is: U 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: O Н — С — С — Н 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: || Н — Н- No, it has the right number of valence electrons but doesn't satisfy the octet rule. The symbols of the problem atoms are:* :0 : :
- 5. Write the chemical formula that results when the following pairs of ions combine to form an ionic bond. a. Sr2* and 02- b. Mn4 and O2- C. Lit and CI- d. Cst+ and Sz-In the BEST Lewis structure for the molecule XeF2, how many unshared pairs are there on the central atom? Enter a number.Decide whether these proposed Lewis structures are reasonable. proposed Lewis structure Is the proposed Lewis structure reasonable? Yes. No, it has the wrong number of valence electrons. fä=öj] The correct number is:|| Cl=0: olo No, it has the right number of valence electrons but doesn't satisfy the octet rule. Ar The symbols of the problem atoms are:* Yes. No, it has the wrong number of valence electrons. The correct number is:I C=N 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: N= N 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 "O,0". Explanation Check ©…
- 3. What type of elements form ionic bonds with metals? 4. What type of elements form ionic bonds with nonmetals? 5. Write the chemical formula that results when the following pairs of ions combine to form an ionic bond. a. Sr2+ and 02- b. Mn4+ and O2- C. Lil+ and CI- d. Cs1+ and S2-Decide whether these proposed Lewis structures are reasonable. proposed Lewis structure 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: 0 Yes. No, it has the wrong number of valence electrons. a=ö:] 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: 0 Yes. No, it has the wrong number of valence electrons. :0: The correct number is: 0 HIC-H 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 "O,0". X 5 ? : Z: I :Z:Decide whether the Lewis structure proposed for each molecule is reasonable or not. molecule OF₂2 H₂ BO3 proposed Lewis structure : 0: || 0 = :0: O-S- || :0: || H-O-B-O-H | :0: H Is this a reasonable structure? If not, why not? O Yes, it's a reasonable structure. O No, the total number of valence electrons is wrong. The correct number is: O No, some atoms have the wrong number of electrons around them. The symbols of the problem atoms are: 0 O Yes, it's a reasonable structure. O No, the total number of valence electrons is wrong. The correct number is: O No, some atoms have the wrong number of electrons around them. The symbols of the problem atoms are: 0 O Yes, it's a reasonable structure. O No, the total number of valence electrons is wrong. The correct number is: O No, some atoms have the wrong number of electrons around them. The symbols of the problem atoms are: 0 * If two or more atoms have the wrong number of valence electrons around them, just enter the chemical symbol for the…