SAT Subject Test Chemistry,10 edition
Part Three CHEMISTRY REVIEW ...
Chapter 3 Atomic Structure The atom is the basic building block of matter, representing the smallest unit ...
Subatomic Particles There are three kinds of particles found in a typical atom: protons and neutrons, which ...
Even though the number of protons must be the same for all atoms of an element, the number of neutrons, a ...
DON’T MIX THESE UP ON TEST DAY Atomic number = number of protons Mass number = number of protons and neutr ...
Atomic Weights and Isotopes To report the mass of something, one generally gives a number together with a ...
BASIC CONCEPT 1 mole = 6.022 × 10^23 = Avogadro’s number As we have seen, Avogadro’s number serves as a ...
mass of 40 amu and accounts for 60% of naturally occurring Q. The atomic mass of isotope B is 44 amu and a ...
Bohr’s Model of the Hydrogen Atom In his model of the structure of the hydrogen atom, Bohr postulated t ...
spectrum is the same: The atom gives off energy as an electron goes from a higher to a lower ener ...
Quantum Mechanical Model of Atoms While the concepts put forth by Bohr offered a reasonable explanation for ...
4 quantum numbers: n, l, ml, ms Principal Quantum Number The first quantum number is commonly known as the pr ...
The third quantum number is the magnetic quantum number and is designated ml. An orbital is a specific region wi ...
The two spin orientations are designated and . Whenever two electrons are in the same orbital, they mu ...
Electron Configuration and Orbital Filling For a given atom or ion, the pattern by which orbitals are filled ...
To determine which subshells are occupied, you must know the number of electrons in the atom. In the case ...
The presence of paired or unpaired electrons affects the chemical and magnetic properties of an atom or m ...
Review Questions 1 . The Mg2+ ion has how many electrons? (A) 12 (B) 10 (C) 14 (D) 24 2 . It can be shown using m ...
(A) s (B) s and p (C) s, p, and d (D) s, p, d, and f 5 . The total number of electrons that could be held ...
(A) 2 p (B) 3 s (C) 3 d (D) 4 s (E) 3 p 9 . Which of the following correctly represents an excited state of scandium ...
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