The correct answer is D. magnetic bond
Answer:
Groups 1, 2, 13-18
Explanation:
The periodic table is divided into two broad categories: Main Group Elements and Transition Metals. The Main Group Elements include the alkali metals, alkaline earth metals, halogens, noble gases, and any groups not mentioned (see the answer).
Answer:
b. NaCl solution
Explanation:
Free electrons are the main current carrier in the all materials .If the materials is having free electrons in their structure then they will allow to move the electrons from one place to another place .The current can be define as ,the charge per unit second .
In the given options only NaCl solution is having free electrons that is why only NaCl solution will conduct electricity.Solid NaCl , Solid sugar and Sugar solution do not have free electron in their structure that is why will not conduct electricity.
Therefore the answer will be b.
b. NaCl solution
Answer: Allows scientists to avoid the effects of light pollution
Just took the quiz on edge.
Climate change is consuming because there is lots of clear cutting and co2 that creates gases that are trapped into the atmosphere and there are lots of green house gases which produce more heat than the earth's atmosphere can take