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Chapter 2: Problem 99

Cathode rays (a) may be positively or negatively charged (b) are a form of electromagnetic radiation similar to visible light (c) have properties identical to \(\beta\) particles (d) have masses that depend on the cathode that emits them

Short Answer

Expert verified
The correct answer is (c) have properties identical to \(\beta\) particles

Step by step solution

01

Understand the nature of Cathode Rays

Cathode rays are streams of electrons that are emitted by the cathode in a high-vacuum tube. They are negatively charged particles.
02

Compare the Properties

Compare the given options with the actual properties of cathode rays. (a) Cathode rays are not positively charged, they are negatively charged. So, this option is incorrect. (b) Cathode rays are not a form of electromagnetic radiation, unlike visible light which is a form of electromagnetic radiation. So, option (b) is also incorrect. (c) \(\beta\) particles are also streams of high-speed electrons emitted during radioactive decay. So, Cathode rays and \(\beta\) particles have identical properties. Hence, option (c) is correct. (d) Cathode rays do not depend on the type of the cathode material. Therefore, option (d) is also incorrect.
03

Choose Correct Option

Based on the comparison of properties of cathode rays, the correct answer is (c) have properties identical to \(\beta\) particles

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Most popular questions from this chapter

A low-melting Sn-Pb-Cd alloy called eutectic alloy is analyzed. The mole ratio of tin to lead is 2.73: 1.00 and the mass ratio of lead to cadmium is 1.78: 1.00 . What is the mass percent composition of this alloy?

In an experiment, \(125 \mathrm{cm}^{3}\) of zinc and \(125 \mathrm{cm}^{3}\) of iodine are mixed together and the iodine is completely converted to \(164 \mathrm{cm}^{3}\) of zinc iodide. What volume of zinc remains unreacted? The densities of zinc, iodine, and zinc iodide are \(7.13 \mathrm{g} / \mathrm{cm}^{3}, 4.93 \mathrm{g} / \mathrm{cm}^{3}\) and \(4.74 \mathrm{g} / \mathrm{cm}^{3}\), respectively.

For the ion \(^{228} \mathrm{Ra}^{2+}\) with a mass of 228.030 u, determine (a) the numbers of protons, neutrons, and electrons in the ion; (b) the ratio of the mass of this ion to that of an atom of \(^{16} \mathrm{O}\) (refer to page 47 ).

The following radioactive isotopes have applications in medicine. Write their symbols in the form \(\&\) E. (a) cobalt- \(60 ;\) (b) phosphorus- \(32 ;\) (c) iron-59; (d) radium-226.

In your own words, define or explain these terms or symbols: (a) \(\underset{\mathbf{Z}}{\mathbf{A}} \mathbf{E} ;\) (b) \(\boldsymbol{\beta}\) particle; \(\mathbf{( c )}\) isotope; \(\mathbf{( d )}^{16} \mathbf{O}\) (e) molar mass.
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