Which is the electron configuration for lithium?

1s2

2s3

1s22s1

1s12s2

Select the correct answer. Which of the following is an example of kinetic energy? OA a boy resting on a park bench OB. a book sitting on a shelf OC. a rubber band stretched as far as it can go OD. a swing moving back and forth Reset Nect

Approximately what precent of parent isotopes remains after 0.5 half lives have passed

Consider the reaction A ⟶Products Use the following rate data to determine the order of the reaction with respect to the reactant A. [A] (M) Initial Rate (M/s) 0.20 0.060 0.40 0.240 4 2 3 1

What is the mass of 0.921 moles of sulfur dioxide gas (SO2) ?

Oil flows upward in the wick of a lantern because of the liquid property called A. density. B. meniscusity. C. viscosity. D. capillarity.

The mass flow rate of gasoline leaving a refinery is 1610 kg/min. The specific gravity of a gasoline is 0.700. A retail gasoline pump is able to fill a 20.0 gallon automobile tank in 1.80 minutes.

Calculate the solubility of cux (ksp=[cu2+][x2-]=1.27*10-36) in a solution that is 0.190 m in nacn.

An atom has seven valance electrons which element could have this type of atom

How is the ocean important to human survival? restate the question

A sample of pure lithium contains 7.99% lithium by mass. What is the % lithium by mass in a sample of pure lithium nitrate that has twice the mass of the first sample?