QUESTION: Which of the following elements is a post-transition metal? A. silicon, B. lead, C. sodium, D. chromium SCRIPT: Which of the following.

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Presentation transcript:

QUESTION: Which of the following elements is a post-transition metal? A. silicon, B. lead, C. sodium, D. chromium SCRIPT: Which of the following elements is a transition metal? A. silicon, B. lead, C. sodium, D. chromium PAUSE The best way to answer this question is to refer to the periodic table. CONTINUED ON NEXT SLIDE

The transition elements, or transition metals are in the highlighted section of the periodic table shown here. The post-transition metals are the metals belonging to groups 3A, CLICK 4A, and 5A that immediately follow the transition metals. The six naturally occurring post-transition metals are gallium, indium, thallium, tin, lead, and bismuth. Here’s silicon… its symbol is Si Here’s lead… CLICK its symbol is Pb Here’s sodium CLICK its symbol is Na And here’s chromium… its symbol is Cr The correct answer is lead. CLICK HIGHLIGHT answer PAUSE END RECORDING

QUESTION: Which of the following elements is a transition metal? A. silicon, B. lead, C. sodium, D. chromium

Video ID: 1-6-3 © 2008, Project VALUE (Video Assessment Library for Undergraduate Education), Department of Physical Sciences Nicholls State University Author: Glenn V. Lo Narrator: Funded by Louisiana Board of Regents Contract No. LA-DL-SELECT-13-07/08