Consider a hypothetical compound AX3Y. A has 4 valence electrons and both X and Y have 7 valence electrons. X is more electronegative than A and Y is less electronegative than A. What is true about this compound?​

Using the periodic table, complete the table to describe each atom. type in your answers. a ? b? c? d? e? f?

Three cards with holes are arranged in a straight line. a light is shined through the first card’s hole and travels through all three cards. what does this tell you about light rays? a) that light is reflected b) that light is refractive c) that light travels in a straight line d) that light does not travel in a straight line

What method(s) do plants use to obtain nitrogen? select all that apply. absorb it from the atmosphere use bacteria to convert nitrogen to usable form obtain usable nitrogen compounds from the soil absorb nitrogen from water taken in at the roots