Which element has the highest electronegativity?

A. Nitrogen

B. Iodine

C. Fluorine

D. Selenium

1. What is the difference between a molecular formula, structural formula and an electron dot formula?

For the reaction, calculate how many moles of the product form when 2.05 mol of O2 completely reacts. Assume that there is more than enough of the other reactant. 2H2 (g) + O2 (g) →2H2O (l)

In what situation do covalent bods occur? A. electrons are shared by many atoms and move freely B. electrons are shared equally or C. a stronger atom pulls electrons away from the weaker atom

A hydrate of CoCl2 has a mass of 15.80 g before heating. After heating, the mass of the anhydrous compound is found to be 9.32 g. Explain how you would determine the formula of the hydrate and then write out the full name of the hydrate.

Germanium is a group 4A semiconductor. The addition of a dopant atom (group 3A element) that has fewer valence electrons than the host atom results in a p-type semiconductor.

Why have some chemicals been banned from usage in agriculture/food production

Which of the following is a pure substance

What is 825640 in scientific notation

Which type of substance can conduct electricity in the liquid phase but not in the solid phase? metallic element molecular compound nonmetallic element ionic compound

Differentiate between the significance of the coefficients in a balanced chemical equation