The electron configurations of two unknown elements X and Y are shown. X: 1s22s22p63s1
Y: 1s22s1

Which statement is most likely correct about the two elements?

What forms when chemical reactions combine pollution with sunlight?

Remember to use the proper number of significant figures and leading zeros in all calculations. gelatin has a density of 1.27 g/cm³. if you have a blob of gelatin dessert that fills a 2.0 liter bottle, what is its mass? 2540 g2500 g3.9 x 10-43.937x 10-4

Which of the following is a chemical property of water at 4 c