Cracking the SAT Chemistry Subject Test

consider the ratio of the limiting reagent to products, and determine how many moles of the desired product ...

Chapter 6 Electron Configurations and Radioactivity Chemical reactions involve interactions between the ...

ORBITALS Quantum Mechanics With the advent of quantum mechanics, our understanding of the atom has c ...

quantum numbers for that electron, are essentially an electron address—they give us an idea of approximately ...

(3, 1, −1, + )(3, 1, −1, − ) (3, 1, 0, + ) (3, 1, 0, − ) (3, 1, +1, + )(3, 1, +1, − ) A total of six electr ...

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The Heisenberg Principle and De Broglie’s Hypothesis But what’s an orbital? The test writers expect you to as ...

ELECTRON CONFIGURATIONS For the SAT Chemistry Subject Test, you’ll have to be able to figure out electron conf ...

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Each period (horizontal row) of the periodic table corresponds to an energy shell. For example, atoms ...

they’re in the s area of row 2 and fill the 2s subshell and keep going. Starting with ...

orbital. Second, hybrid orbitals, which we will talk about in the next chapter, also violate the Aufbau ...

noble gases have 8 valence electrons. Beryllium, however, (Be, atomic number 4)—1s^22 s^2 —has 2 valence ...

DRILL 1 Question Type A Questions 1–3 refer to the following. (A) Bohr model (B) De Broglie’s hypothesis (C) H ...

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Question Type C The electron configuration 1s^22 s^22 p^63 s^23 p^64 s^23 d^7 represents an atom of the element ...

(C) a noble gas (D) a transition metal (E) a lanthanide element ...

RADIOACTIVITY AND HALF-LIVES Atomic nuclei, as you know, are made of protons and neutrons. In some atoms, the c ...

symbolized that way— . The 4 represents the mass number, and the 2 represents the atomic number (number of proton ...

Sometimes, when a nucleus can become more stable by increasing its neutron- to-proton ratio, it takes a pro ...