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Chapter 2: Q38E (page 128)

Using the periodic table, classify each of the following elements as a metal or a nonmetal, and then further classify each as a main-group (representative) element, transition metal, or inner transition metal:

(a) cobalt

(b) europium

(c) iodine

(d) indium

(e) lithium

(f) oxygen

(h) cadmium

(i) terbium

(j) rhenium

Short Answer

Expert verified

a. Metal, Transition Metal

b. Metal, Inner transition Metal

c. Non-Metal Main group element

d. Metal, Main group element

e. Metal, Main group element

f. Non-Metal Main group element

h. Metal, Transition Metal

i. Metal, Inner Transition Metal

j. Metal, Transition Metal

Step by step solution

01

Classify the cobalt, europium, and iodine.

a. Cobalt: - Using the periodic table, we have an atomic number of cobalt is \(27\) and present in \({9^{th}}\) group and \({4^{th}}\) period. So, it is metal and transition metal.

b. Europium: - Using the periodic table, we have an atomic number of cobalt is \(63\) and present in \({9^{th}}\) group and \({6^{th}}\) period. So, it is metal and transition metal.

c. Iodine: Using the periodic table, we have an atomic number of cobalt is \(53\) and present in \({17^{th}}\) group and \({5^{th}}\) period. So, it is non-metal and main group element.

02

Classify the indium, lithium, and oxygen.

d. Indium: - Using the periodic table, we have an atomic number of cobalt is \(49\) and present in \({13^{th}}\) group and \({5^{th}}\) period. So, it is metal and main group element.

e. Lithium: - Using the periodic table, we have an atomic number of cobalt is \(3\) and present in \({1^{st}}\) group and \({2^{nd}}\) period. So, it is metal and main group element.

f. Oxygen: Using the periodic table, we have an atomic number of cobalt is \(8\) and present in \({16^{th}}\) group and \({2^{nd}}\) period. So, it is non-metal and main group element.

03

Classify the cadmium, terbium, and rhenium.

h. Cadmium: - Using the periodic table, we have an atomic number of cobalt is \(48\) and present in \({12^{th}}\) group and \({5^{th}}\) period. So, it is metal and transition metal.

i. Terbium: - Using the periodic table, we have an atomic number of cobalt is \(65\) and present in \({11^{th}}\) group and \({6^{th}}\) period. So, it is metal and Inner transition metal.

j. Rhenium: Using the periodic table, we have an atomic number of cobalt is \(75\) and present in \({7^{th}}\) group and \({6^{th}}\) period. So, it is metal and transition metal.

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Most popular questions from this chapter

Open the Build a Molecule simulation (http://openstaxcollege.org/l/16molbuilding) and select the 鈥淟arger Molecules鈥� tab. Select an appropriate atoms 鈥淜it鈥� to build a molecule with two carbon and six hydrogen atoms. Drag atoms into the space above the 鈥淜it鈥� to make a molecule. A name will appear when you have made an actual molecule that exists (even if it is not the one you want). You can use the scissors tool to separate atoms if you would like to change the connections. Click on 鈥�3D鈥� to see the molecule, and look at both the space-filling and ball and-stick possibilities.(a) Draw the structural formula of this molecule and state its name.(b) Can you arrange these atoms in any way to make a different compound?

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