Chapter 4: Q. 4.48 (page 120)
Identify the form of electromagnetic radiation in each pair that has the greater energy:
a. Radio waves or violet light.
b. Infrared light or ultraviolet light.
(a)Violet light has greater energy than radio waves.
(b)Ultraviolet light has greater energy than infrared light.
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Identify the form of electromagnetic radiation in each pair that has the greater energy:
a. Green light or yellow light.
b. Microwaves or blue light.
Is each of the following statements true or false?
a. A proton and an electron have opposite charges.
b. The nucleus contains most of the mass of an atom.
c. Electrons repel each other.
d. A proton is attracted to a neutron.
Give the symbol of the element that has the
a. smallest atomic size in Group
b. smallest atomic size in Period
c. highest ionization energy in Group
d. lowest ionization energy in Period
e. most metallic character in Group.
Give the symbol of the element described by each of the following:
a. the alkaline earth metal in Period
b. Group , Period
c. the noble gas in Period
d. the halogen in Period
e. Group , Period
Using Table 4.4, identify the function of each of the following in the body and classify each as an alkali metal, an alkaline earth metal, a transition element, or a halogen:
a. Ca
b. Fe
c. K
d. Cl
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