How many elements are there in period 3?
A) 2
B) 6
C) 8
D) 18
C
You might also like to view...
The general chemical equation for photosynthesis is shown below. Through this reaction, is the carbon oxidized or reduced? How can you tell? 6 CO2 + 6H2O ? C6H12O6 + 6 O2
A. Reduced, since in carbon dioxide there are two oxygen atoms for every one carbon, but within the product, C6H12O6, (glucose), there is only one oxygen for every one carbon. B. Oxidized, since carbon is in the +4 oxidation state in CO2 but in the +6 oxidation state in the product, C6H12O6, glucose. C. Neither, since carbon does not change its oxidation state and is neither oxidized nor reduced. D. Both, since the carbon atoms within the glucose molecules display two different charge states.
In an environmentally sustainable society, most affluent citizens work to decrease their consumption of products
Indicate whether the statement is true or false
A viewing azimuth of 180° will cover a larger viewing area than a viewing azimuth of 45°.
Answer the following statement true (T) or false (F)
That the northern continents were once joined and located along the equator was shown by what?
a. the coal-age plant fossils of North America and Europe b. the Glossopteris flora c. the distribution of mountain ranges d. the distributions of Permian and Triassic reptiles e. the distributions of northern hemisphere glacial tillites