Lengths. Practice Exercise 1
Hypothetical elements X and Y form a molecule XYz, in
which both Y atoms are bonded to atom X (and not to one
another). The X-X distance in the elemental form of X is
2.04 Å, and the Y-Y distance in elemental Y is 1.68 Å. What
would you predict for the X-Y distance in the XY2 molecule?
(a) 0.84 Å (b) 1.02 Å (c) 1.86 Å (d) 2.70 Å (e) 3.72 Å

An atom of lithium (li) and an atom of chlorine (cl) engage in a chemical reaction. which correctly describes the structure of the resulting chemical compound? hint: consider the class of each element. the chemical compound will have a network structure. the chemical compound will have triple bonds. the chemical compound will have a ball-and-stick structure. the chemical compound will have double bonds.

How have the greenhouse gasses increased from the year 2000 to 2018

Ahypothesis must be testable and falsifiable to be considered scientific a. trueb. false