Chem 2 MIDTERM 3 KEY

Chem 2 MIDTERM 3 KEY - Version A 6) Which of the following...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Midterm Exam 3, CHEM 002 Spring 2007. (Chapters 12, 13 and 14) Version A Name: _________________________ Date: ____________ 1) Which series below, as written, represents a decreasing trend in ionic radii (i.e. largest to smallest)? a) Na + , K + , Rb + , Cs + b) Sr +2 , Ca +2 , Mg +2 , Be +2 c) F - , O -2 , N -3 , Be +2 d) S -2 , O -2 , Se -2 , Te -2 e) Answer not given 2) What is the minimum energy required to remove (i.e. ionize) an electron from a hydrogen atom in its ground state? a) 0.0974 J b) - 2.18 x 10 -18 J c) - 774 J d) 2.18 x 10 -18 J e) - 4.36 x 10 -18 J 3) Which atom will be attracted most strongly to a magnetic field? a) Li b) Ne c) As d) S e) B 4) What is the oxidation number of phosphorous in the phosphate, PO 4 -3 , ion? a) 0 b) +2 c) -3 d) +5 e) -2 5) Which molecule has the greatest molecular dipole? a) CH 3 NH 2 b) CH 3 Cl c) CH 4 d) CH 3 OH e) CH 3 F Page 1 of 2
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Midterm Exam 3, CHEM 002 Spring 2007. (Chapters 12, 13 and 14)
Background image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Version A 6) Which of the following electronic configurations represents nitride, N-3 , in an excited state? a) 1s 2 , 2s 2 , 2p 5 , 3s 1 b) 1s 2 , 2s 2 , 2p 6 c) 1s 2 , 2s 2 , 2p 4 , 3s 1 d) 1s 2 , 2s 2 , 2p 3 e) 1s 2 , 2s 2 , 2p 6 , 3s 1 7) What is the hybridization of carbon in the carbonate, CO 3-2 , ion? a) sp 2 b) sp 3 c) sp d) p e) s 8) Based upon the VSEPR model, what is the electron pair arrangement in XeF 4 ? a) trigonal planar b) T-shape c) octahedral d) bent e) square planar 9) Considering all possible Lewis structures for nitrite, NO 2-, what is the bond order of the nitrogen oxygen bond? a) 2 b) 1.5 c) 3 d) 1 e) 2.5 10) Using the MO model, the magnetism of O 2-will be a) Paramagnetic b) Diamagnetic c) Answer not given. Page 2 of 2...
View Full Document

This note was uploaded on 02/27/2010 for the course CHEM 1132 taught by Professor Cole/clark during the Spring '08 term at UCM.

Page1 / 2

Chem 2 MIDTERM 3 KEY - Version A 6) Which of the following...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online