The answer is A track star speeding up as he sprints to the finish line.
Answer:
Answer: (b) F
Explanation:
Sodium has 1, magnesium has 2 and Aluminium has 3 electrons in its outermost shell whereas Fluorine has 7 electrons in its outermost shell hence Fluorine does not lose electrons easily.
The electronic configuration of fluorine is 2,7.
Fluorine is the ninth element with a total of 9 electrons.
The first two electrons will go in the 1s orbital.
The next 2 electrons for F go in the 2s orbital.
The remaining five electrons will go in the 2p orbital. Therefore the F electron configuration will be 1s22s22p5.
I need help on this one too I think it might be (b)
The decrease in velocity is called deceleration or negative acceleration.
Hope i helped... If you need anything else ask me! :)
A, B and D should be the ones you should check
