Which element has an equal number of electron pairs and of unpaired electrons within orbitals of principal quantum number 2?

1 mole of hcl (g) has a greater entropy than 1 mole of hbr (g). true or false

If a color change occurs when two solutions are mixed has a chemical reaction likely occurred?

Where can you find atoms

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Metal atoms will most likely form ions by the 1 loss of protons. 2 loss of electrons. 3 gain of electrons. 4 gain of protons.

What is the value of Kw at 25°C? 1.0 x 10-14 1.0 x 10-7 1 7 14

Which statement best describes a bacterial cell? A It contains more than one cell. B It is a complete organism. C It is part of a larger organism. D It contains different kinds of cells

Lithium (Li) and oxygen (O) are both in period 2. They both have? a. similar properties b. the same number of protons c. two electron shells d. the same number of electrons

What compares a law and a theory?

Explain what domain would best be represented by the "?" in the diagram. A) Eukarya because the organisms are all eukaryotic. B) Eukarya because the organisms are all prokaryotic. C) Bacteria because some of the organisms are autotrophs.