Extra Credit Homework Answers

Extra Credit - Version PREVIEW – Extra credit HW – radivojevic –(1254 1 This print-out should have 15 questions Multiple-choice questions may

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

View Full Document Right Arrow Icon

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

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Version PREVIEW – Extra credit HW – radivojevic – (1254) 1 This print-out should have 15 questions. Multiple-choice questions may continue on the next column or page – find all choices before answering. Matter 13 001 10.0 points An element with two electrons in its highest energy level is probably 1. an alkaline earth metal. correct 2. a transition metal. 3. an alkali metal. 4. a rare-earth metal. Explanation: Msci 05 1676 002 10.0 points Which of the following electron configurations would represent the most strongly paramag- netic species? 1. [Ne] 3 s 2 3 p 5 2. [Ar] 4 s 1 3. [Ar] 3 d 5 4 s 2 correct 4. [He] 2 s 2 2 p 3 5. [Ne] 3 s 2 Explanation: Good magnets (paramagnetic) have un- paired electrons in their outer orbital. [Ar] 3 d 5 4 s 2 has 5 unpaired electrons in its d orbital. [He] 2 s 2 2 p 3 has 3 unpaired elec- trons in its p orbital. [Ne] 3 s 2 3 p 5 has only 1 unpaired electron in its p orbital. [Ar] 4 s 1 has only 1 unpaired electron in its s or- bital. [Ne] 3 s 2 has a full s orbital, thus no unpaired electrons. Therefore, [Ar] 3 d 5 4 s 2 is the strongest paramagnetic because it has the most unpaired electrons. Internal Electrons 003 10.0 points Electrons that exist in orbitals closest to the nucleus typically 1. have higher energies and are less stable. 2. have higher energies and are more sta- ble. 3. have lower energies and are more stable. correct 4. have lower energies and are less stable. Explanation: Msci 06 0506 rep2 004 10.0 points Which one of the following isoelectronic ions would be expected to have the largest radius?...
View Full Document

This note was uploaded on 09/20/2010 for the course CHEM 102 taught by Professor Peterpastos during the Summer '08 term at CUNY Hunter.

Page1 / 4

Extra Credit - Version PREVIEW – Extra credit HW – radivojevic –(1254 1 This print-out should have 15 questions Multiple-choice questions may

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