How reactive is an atom of sodium(na) and why? question 1 options: sodium (na) is not very reactive because it does not have a full valence shell. sodium (na) is very reactive because it does not have a full valence shell. sodium (na) is very reactive because it does not have enough protons in the nucleus. sodium (na) is not very reactive because it can only bond with chlorine (cl) to become salt. i need this asap !

One day, after pulling down your window shade, you notice that sunlight is passing through a pinhole in the shade and making a small patch of light on the far wall. you see that the patch of light seems to be a circular diffraction pattern. it appears that the central maximum is about 1 cm across and you estimate that the distance from the window shade to the wall is about 3 m. what is (a) the average wavelength of sunlight? (b) the diameter of the pinhole?

Describe the function of the endomembrane system? what organelles are involved?

What properties of a moving object are used in determining the object's energy of motion