Which of the following statements is true based on an element with 7 valence electrons? If you would like to view the Reference Material, click here.

The element is a stable metal.

The element is a reactive nonmetal.

The element is a stable nonmetal.

The element is a reactive metal.

Several kinds of bears are found on earth. most bears are brown or black, but one type of bear, the polar bear, is white. what process led to this difference in fur color? explain your answer.

Ill give brainiestif one neutron initiates a fission event that produces two neutrons in the products, how many new reactions can now be initiated? if each of the neutrons produced in the first fission event then initiates a fission event that produces one neutron in the products, how many new reactions can now be initiated by each neutron? how many neutrons in total were produced by the two fission events described?

Find the number of grams of hcl needed to react completely with .50 moles of magnesium.