The answer is Strontium(Sr). The reactive increase from right to left. And this element has two valence electrons. So Rb is not correct. Then the very reactive metal is Sr.
Answer:-
Electrocautery Device
Explanation:-
The heat and light produced like a discharge due to a low impedence connection is called arc flash. They can cause substantial damage including fire and injury.
Electrocauterization or electric surgery is the process of destroying tissue with electricity. In this process the electrode is held away from the tissue, so that when the air gap between the electrode and the tissue is ionized leading to an electric arc discharge.
Here a low impedence is used to since a return electrode burn will occur if the heat produced, over time, is not safely dissipated by the size or conductivity of the patient return electrode.
Hence an arc flash can result from a Electrocautery Device if proper precautions are not taken.
Explanation:
According to the electronegativity table, whenever there a difference of more than 2.0 then the bond formed will be ionic in nature. On the other hand, if electronegativity difference is less than 0.5 then the bond formed will be non-polar covalent in nature.
As it if given that electronegativity difference of given elements will be as follows.
Electronegativity difference = 3.1 - 0.9
= 2.2
Since, the electronegativity difference of given elements is 2.2. Hence, these elements will form an ionic bond.
Thus, we can conclude that mostly ionic in character and formed between a metal and non-metal best describes the bond between these elements.