Chemistry Questions and Answers

Predict what would happen if carbon had 8 valence electrons. Would it still form so many compounds? Explain logically

Organic/Carbon Chemistry • Describe atomic structure • Explain how atoms join to form molecules • Explain the concept of Electronegativity and how it facilitates important intermolecular interactions. • Hydrogen bonding • Distinguish between hydrophilic and hydrophobic molecules (polar and non-polar molecules) • Be able to identify functional groups, and describe their roles in macromolecules • Explain the importance of water to the cell’s functioning • Explain the importance of hydrogen bonding in defining the unique properties of water • Define and explain the basis of hydrogen bonding • Distinguish between the relative strengths of covalent, ionic, hydrogen bonds. • Explain electronegativity and the origin of polar bonds • Classify different previously unseen molecules as polar or non-polar • Distinguish between hydrophilic and hydrophobic molecules

What is the correct molecular geometry of the following, respectively: ClF4+, COCl2, XeF4, IF3, IO2F2- (1) Seesaw, Trigonal Planar, Square Planar, T-Shaped, Seesaw (2) Tetrahedral, Trigonal Planar, Octahedral, Trigonal bipyramidal, Trigonal bipyradmidal (3) Pyramidal, Trigonal planar, planar, Seesaw, T-Shaped (4) Trigonal Planar, Trigonal pyramidal, Square Planar, T-Shaped, Seesaw (5) Seesaw, T-shaped, Square planar, Trigonal planar, Trigonal pyramidal

What is the molecular geometry of NOCl as predicted by the VSEPR model?

The PCl5 molecule has Multiple Choice nonpolar bonds, and is a nonpolar molecule. nonpolar bonds, but is a polar molecule. polar bonds, and is a polar molecule. polar bonds, but is a nonpolar molecule.

Write a Lewis structure for OF2, then answer the following questions about the Lewis structure. 1. How many valence electrons does this compound have? 2. How many bonded electrons does this compound have? 3. How many lone pairs of electrons does this compound have? 4. How many single bonds does this compound have?

lewis dot structure for (SBr6)

Consider the following Lewis structure for XeO3 and answer the following three questions. What is the ideal O-Xe-O bond angle? (Choose the closest value.) 90° 109° 120° 180° What is the molecular geometry? tetrahedral trigonal planar trigonal pyramidal T-shaped Is the XeO3 molecule polar? Yes No

what is the electron geometry and the molecular geometry of KrF2? what is the electron geometry and the molecular geometry of SF6? what is the electron geometry and the molecular geometry of BrCl5? what is the electron geometry and the molecular geometry of KrF4?

Is ClF3 a polar, nonpolar, or ionic compound?

Write the empirical formula of at least four binary ionic compounds that could be formed from the following ions mg2+,au3+,f-,o2-

CS2 lewis structure

The Lewis structure for PO43- is shown. What is the electron-pair geometry around the central atom?

Identify the elements correctly shown by decreasing radii size. Group of answer choices N > N3- K+ > K S- > S2- N3- > N Cu2+ > Cu+

Draw the Lewis structure for ClF3 and then determine the following: [ Select ] ["3", "6", "4", "0", "1", "8", "2", "7", "5"] How many electron groups around the central atom? [ Select ] ["linear", "square planar", "octahedral", "bent/angular/V-shaped", "T-shaped", "square pyramidal", "trigonal planar", "seesaw", "trigonal bipyramidal", "tetrahedral", "trigonal pyramidal"] What is the electron geometry around the central atom? [ Select ] ["tetrahedral", "seesaw", "trigonal pyramidal", "octahedral", "bent/angular/V-shaped", "square planar", "square pyramidal", "linear", "trigonal planar", "T-shaped", "trigonal bipyramidal"] What is the molecular geometry around the central atom? [ Select ] ["polar", "nonpolar"] Is the molecule polar or nonpolar?

Give the bond order and number of unpaired electrons in C2 molecule and N2- ion.

The PCl5 molecule has polar bonds, and is a polar molecule. polar bonds, but is a nonpolar molecule. nonpolar bonds, and is a nonpolar molecule. nonpolar bonds, but is a polar molecule.

Consider the molecule, XeF4. The electron domain geometry (EDG) is Question Blank 1 of 2 The molecular geometry (MG) is Options: seesaw octahedral trigonal bipyramidal square planar square pyramidal tetrahedral

what is 6CO2

How many valence electrons does nitrogen have?

The electron domain and molecular geometry of BrO2- is _________. A) trigonal planar, trigonal planar B) tetrahedral, trigonal planar C) trigonal pyramidal, linear D) tetrahedral, bent E) trigonal pyramidal

Fill in the name and empirical formula of each ionic compound that could be formed from the ions in this table: some ionic compounds cation anion empirical formula name of compound K+ IO−4 KIO4 K+ IO−3 KIO3 K+ IO− KIO K+ IO−2 KIO2"

molecular geometry for Phosphorus triiodide

"Describe the hybrid orbitals used by the central atom(s) and the type(s) of bonds formed in SO2. Hybridization: Number of bonds: σ π"

"The following five species have a bent molecular shape. The central atom is underlined. [H2F]+ [IO2]+ SeH2 [NO2]‾ SO2"

"Name of Compounds Se4S4 XeO3 SeS2 XeF6 NH3"

"After drawing the Lewis dot structure for CH3Cl, determine the number of single bond(s), double bond(s), and lone pair(s) on the central atom. Question 4 options: single bond(s) = 4, double bond(s) = 0, lone pair(s) = 1 single bond(s) = 4, double bond(s) = 1, lone pair(s) = 0 single bond(s) = 3, double bond(s) = 0, lone pair(s) = 1 single bond(s) = 4, double bond(s) = 0, lone pair(s) = 0 single bond(s) = 3, double bond(s) = 1, lone pair(s) = 0"

"Which bond has the highest bond dissociation energy? Question 7 options: N-N All three bonds should have about the same dissociation energy. N=N N≡N"

which subshell is added to form a -1 N anion?

"(1) The element with an electron configuration of 1s2 2s2 2p6 3s2 3p6 4s2 3d2 is in group _ and period _? The element with an electron configuration of 1s2 2s2 2p6 3s2 is in group _ and period _?"

Lewis structure for f2 molecule with covalent bonds and lone pairs

"What is the molecular geometry of NO3-? Group of answer choices tetrahedral tee-shaped trigonal pyramidal trigonal planar"

"Draw a Lewis structure for XeF4 and answer the following questions based on your drawing. 1. For the central xenon atom: The number of lone pairs = The number of single bonds = The number of double bonds = 2. The central xenon atom A. Obeys the octet rule B. Has an incomplete octet. C. Has an expanded octet."

What is the bond order for C2? [ Select ] [""3"", ""0.5"", ""2"", ""2.5"", ""1"", ""3.5"", ""1.5"", ""0""] Is C2 paramagnetic or diamagnetic? [ Select ] [""paramagnetic"", ""diamagnetic""] What is the bond order for C2-? [ Select ] [""3.5"", ""2.5"", ""1.5"", ""0"", ""0.5"", ""3"", ""2"", ""1""] Is C2- paramagnetic or diamagnetic? [ Select ] [""paramagnetic"", ""diamagnetic""] What is the bond order for C2+? [ Select ] [""0.5"", ""2.5"", ""3"", ""0"", ""1.5"", ""2"", ""1"", ""3.5""] Is C2+ paramagnetic or diamagnetic? [ Select ] [""paramagnetic"", ""diamagnetic""] Which of the three has the longest bond? [ Select ] [""C2+"", ""C2-"", ""C2""] Which of the three has the strongest bond?

what is the best Lewis structure for ClF4+?

"The correct formula for the base copper (I) hydroxide is CuOH(aq) Question 25 options: True False"

Ca2+Ca2+ and S2−S2− Express your answer as a chemical formula.

"Which of the following statements is true for the Lewis structure of ClF3 in which the formal charges are minimized? W: Central atom has an expanded octet X: The octet rule is obeyed Y: The central atom has incomplete octet Z: The central atom has 2 lone pairs"

"The molecular geometry of the BrO3- ion is ________. A) trigonal pyramidal B) trigonal planar C) bent D) tetrahedral E) none of above"

What is the molecular geometry of the SiF4 ?