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

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?

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 

When two references point to the same object, ________________________________ .

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.

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: ↑↓ ↑↓ ↑↓

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

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

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

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