The number above the element’s symbol is the element’s atomic number. Match each element with the number of valence electrons it has. Aluminum 13
Sulfur 16
Sodium 11
Silicon 14
Magnesium 12
phosphorus 15

4
5
3
6
2

hypothesising or postulating

the box does not move because you need to use a force greater than 300 n. you are only using 50 n. it needs to at least be 301 n for the box to move because then it is an unbalanced force and it will move the way that the greater force is pushing it. if you use only 300 n it will be a balanced force and will not move because the force you are exerting on the   box is the same as its force.

hope this !

im sorry if i went too in depth, i am going to include a link to a video on khan academy that will explain this.   hope that you like the video and that it explains more in detail to you.

that is the link.

c) power lifting, will be your answer.

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deku ❤