"Answer the following question in few sentences.

(a) Briefly cite the main differences between ionic, covalent, and metallic bonding
(b) What is electronegativity? Metals generally have low electronegativity values of about 1.8. How do you associate this with high conductivity of metals?
(c) Write down the typical bond strengths of C-CC - HH - H covalent bonds and a H - H secondary bond. Briefly explain the mechanism behind the secondary bonding.
(d) Based on the atomic number and valence electrons determine the possible number of covalent bonds for atoms of the elements: germanium, phosphorus, selenium, and chlorine."

report

explanation:

the results is a decrease in air temperature with an increase of altitude.

explanation:

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.