The noble gases are the least ____ of any elements on the periodic table. The___ form acidic compounds with hydrogen. The haloge
2 answers:
Explanation :
Noble gases are the elements of group 18. This series contains helium, neon, radon krypton and radon.
The noble gases are the least reactive of any elements on the periodic table. This is because they have eight valance electrons in its outermost shell.
Non-metals or poly atomic ions forms acidic compounds with hydrogen. For example : etc forms acidic compounds with hydrogen.
The halogens are the most reactive among all the elements. This is because halogens suddenly combines with most of the metals. They are never seen uncombined in nature.
For example : Chlorine, fluorine and astatine are some halogens.
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Answer:
The amount of work done in order to lift the box is
Explanation:
Given the weight of each box is
And the man lifts boxes at a height of
We need to find the amount of work done.
The amount of work done is the product of applied force that causes the displacement
.
In our problem force is and displacement is
.
Now, work done
So, the amount of work done in order to lift the box is