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Author Archives: Anonymous

The print and the println methods are identical and can be u…

The print and the println methods are identical and can be used interchangeably.

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Consider the following snippet of code:         Random gener…

Consider the following snippet of code:         Random generator = new Random();       int randNum = generator.nextInt(20) + 1;   Which of the following will be true after these lines are executed?

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Choose the response that includes all of the listed elements…

Choose the response that includes all of the listed elements that are d-transition elements,and no others.      I. 22Ti       II. 42Mo  III. 81Tl IV. 36Kr  V. 92U     (a) I and II            (b) II and III          (c) III and IV       (d) IV and V            (e) I, III, and V 

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When two references point to the same object, ______________…

When two references point to the same object, ________________________________ .

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The most convincing evidence for the existence of electrons…

The most convincing evidence for the existence of electrons came from ____________.  a) cathode ray tubes. b) bombarding beryllium with high-energy α−particles. c) canal rays. d) the gold foil experiment. e) the Thomson model of the atom.

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Which orbital diagram correctly represents the ground-state…

Which orbital diagram correctly represents the ground-state electron configuration of nitrogen (N)?       A) 1s: ↑↓  2s: ↑↓  2p: ↑↓ ↑ ↑       B) 1s: ↑↓  2s: ↑↓  2p: ↑ ↑ ↑       C) 1s: ↑↓  2s: ↑↓  2p: ↑↓ ↑↓ ↑       D) 1s: ↑↓  2s: ↑↓  2p: ↑↓ ↑↓ ↑↓

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Periodic Table of Elements (1) (2).jpg

Periodic Table of Elements (1) (2).jpg

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Arrange the following elements in order of decreasing atomic…

Arrange the following elements in order of decreasing atomic radii.                  Pb, P, Cl, F, Si (a) Cl > F > Pb > Si > P  (b) Pb > Si > P > F > Cl   (c) Pb > Si > P > Cl > F     (d) Pb > Cl > P > Si > F   (e) Pb > Cl > P > Si > F

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No two electrons in the same atom can have the same set of f…

No two electrons in the same atom can have the same set of four quantum numbers is a statement of _________      a) the Heisenberg Uncertainty principle     b) the Pauli exclusion principle     c) Hund’s Rule     d) Daltons’s Rule     e) the Doppler effect

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Arrange the following set of ions in order of increasing ion…

Arrange the following set of ions in order of increasing ionic radii.                 Ca+2, Cl-1, P-3, S-2, K+1   a) Ca+2 < K+1  < P-3  < Cl-1< S-2b) Ca+2 < K+1 < Cl-1 < S-2 < P-3 c) K+1 < Cl-1 < Ca+2 < S-2 < P-3     d) Cl-1 < K+1 > < S-2 

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