Fluorine, chlorine, bromine, iodine, and astatine make up group 17, the halogens. Why are these elements grouped together?
A They are all very reactive nonmetals with similar chemical properties.
B They are all nonreactive gases with similar physical properties.
C Their atoms all have 8 electrons in their outer energy levels.
D They all have the same atomic number.β
Answers: 2
Biology, 22.06.2019 03:30
Which of the following typically characterizes a tropical rainforests
Answers: 1
Biology, 22.06.2019 09:30
Describe your dna model. which part do the straws represent? the pushpins? the paper clips and the black dots you made with the marker?
Answers: 1
Biology, 22.06.2019 16:40
Aremote community desperately needs more electrical energy. it is located in an area with the following characteristics: average wind speed of 15 β 20 km/hr some medium-sized rivers with slow-moving currents few coal deposits some oil exploration being conducted within 400 miles based on the above information, which energy source would be the most economical and safest for the community to pursue? a. fossil fuel b. hydroelectric c. nuclear d. wind
Answers: 2
Fluorine, chlorine, bromine, iodine, and astatine make up group 17, the halogens. Why are these elem...
Mathematics, 21.08.2019 17:00
History, 21.08.2019 17:00
Health, 21.08.2019 17:00
Mathematics, 21.08.2019 17:00
Mathematics, 21.08.2019 17:00
Geography, 21.08.2019 17:00
Geography, 21.08.2019 17:00
Mathematics, 21.08.2019 17:00
Chemistry, 21.08.2019 17:00
Mathematics, 21.08.2019 17:00
Mathematics, 21.08.2019 17:00
History, 21.08.2019 17:00