Without looking at the periodic table write the expected outer electron configuration for each of the following elements:

A. Group 7, fourth period

B. Group 3, fifth period

C. Group 12, sixth period

In the compound CO2, how many lone pairs are on the central atom?

Separate this redox reaction into its component half-reactions. 3o2 4co

Which are true comparisons of alpha and beta decay?

What is the role of the water cycle in sustaining life

How to determine if the ionic bond between lithium fluoride is stronger or weaker than the ionic bond in magnesium oxide?

A 0.239 gram sample of a gas in a 100-mL flask exerts a pressure of 603 mm Hg at 14 degrees Celsius. What is the gas?

Which of the following is true about a redox reaction? In a redox reaction, an electron is lost by the reducing agent. In a redox reaction an electron is lost by the oxidizing agent.

Is the equation above balanced? How do you know? Mg + 2HCl → MgCl2 + H2

What characteristics do atoms of carbon-12, carbon-13, and carbon-14 have in common?

Which of the following changes would decrease the rate at which a solid solute dissolves in a liquid solvent? A. Decreasing pressure B. Decreasing surface area C. Increasing rate of stirring D. Increasing temperature