Explanation:
The noble gases are found in group 18 of the periodic table with a complete valence electron shell. The elements of group 18 are chemically stable because their valence shells are filled.
However, Xenon differs from other noble elements because of its size and large number of electrons. The electrons in the outer shell are not tightly bound with the nucleus and thus, are somewhat free to part in reactions, this why xenon has so many compounds
Answer:
A
Explanation:
The correct answer is: A) "A concentric contraction because muscles cause the elbow joint and arm to move"
