Page 78 - Materials Science and Engineering An Introduction

50 • Chapter 2 / Atomic Structure and Interatomic Bonding

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2
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2.2SS Generate a spreadsheet that computes %IC of (C) 1s 2s 2p 3s 3p 4s 1
a bond between atoms of two elements, once the 2 2 6 2 6 2 2
user has input values for the elements’ electro- (D) 1s 2s 2p 3s 3p 3d 4s
negativities. 2.3FE What type(s) of bonding would be expected for
brass (a copper–zinc alloy)?
FUNDAMENTALS OF ENGINEERING (A) Ionic bonding
QUESTIONS AND PROBLEMS
(B) Metallic bonding
2.1FE The chemical composition of the repeat unit (C) Covalent bonding with some van der Waals
for nylon 6,6 is given by the formula C 12 H 22 N 2 O 2 . bonding
Atomic weights for the constituent elements are
A C 12, A H 1, A N 14, and A O 16. According (D) van der Waals bonding
to this chemical formula (for nylon 6,6), the per- 2.4FE What type(s) of bonding would be expected
centage (by weight) of carbon in nylon 6,6 is most for rubber?
nearly
(A) Ionic bonding
(A) 31.6% (C) 14.2%
(B) Metallic bonding
(B) 4.3% (D) 63.7%
(C) Covalent bonding with some van der Waals
2.2FE Which of the following electron configurations bonding
is for an inert gas?
(D) van der Waals bonding
2
2
2
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(A) 1s 2s 2p 3s 3p 6
6
2
2
(B) 1s 2s 2p 3s 2