Helium has only 2 electrons in it's valence shell
So, option D is your answer.
Hope this helps!
Death would happen, hope this helped
The first sentence got me all psyched up to answer the question "What
horizontal force do the engines generate in order to accelerate it ?".
But the actual question, in the second sentence, turned out to be
a completely different one.
When the plane levels off and continues on at a constant altitude, it's
not accelerating up or down, so the net vertical force on it is zero.
The lift generated by the wings is exactly balancing the downward
force of gravity on the airplane.
Newton's second law of motion states the following:
In which
is the force,
is the mass, and
is the acceleration of the object.
So, the answer is B.
