If an ionic compound has 10 cations and 20 anions, whats the ratio

This is a characteristic of the elements in the periodic table that shows a pattern. it may increase or decrease across or down the table.

What royal scientist used the 29th day of frozen vapor to encounter elements for mastering new culinary creations?

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