By referring to the periodic table (Figure 2.15 or inside front cover), identify the group and period

Question:

By referring to the periodic table (Figure 2.15 or inside front cover), identify the group and period to which each of the following elements belongs. Then decide whether the element is a metal, nonmetal, or metalloid.

a. Se

b. Cs

c. Fe

d. Cu

e. Br

Main-Group Elements Main-Group Elements Atomic number 18 IA 8A Symbol Atomic weight H 1.00K 2 Не 1 H 2 13 14 15 16 17 1.008 2A ЗА 4A 5A 6A 7A 4.002602 3 4. 6 10 Li Be Transition Metals B. Ne 在4 9.0121832 10.81 12.011 14.007 15.090 区B64| 20.1798