Ch. 2 Radiation Concepts Flashcards Preview

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Flashcards in Ch. 2 Radiation Concepts Deck (28)
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1

The unit of mass is the:

Kilogram

2

An electron is ____ charged.

Negatively

3

The orderly arrangement of elements in the periodic table is based upon:

Atomic number

4

Photon wavelength is ______ to photon frequency.

Inversely proportional

5

All of the following are true of electromagnetic energies EXCEPT:
a. They are illustrated as sinusoidal waves
b. They possess both wave and particle characteristics
c. The relationship between frequency and wavelength is direct and proportional
d. They are arranged in an orderly spectrum according to frequency and wavelength

c. The relationship between frequency and wavelength is direct and proportional

6

The maximum number of electrons found in any energy level (shell at any point in time is calculated by the formula:

2n^2

7

The sum of protons and neutrons in a nucleus is called the:

Mass number

8

Groups of the periodic table:

Represent elements with the same outer electron configuration

9

Carbon has an atomic number of 6. One of its isotopes has a mass number of 14. The number of neutrons in this isotope is:

8

10

A period in the periodic table is:

The principal quantum number

11

In the excitation process, electrons in an atom are moved to a _____ energy state.

Higher

12

The maximum number of electrons in a period with a principal quantum number of 4 is:

32
-2n^2

13

Isotopes have _____ mass numbers and ____ atomic numbers.

Different; the same

14

In a vacuum, electromagnetic radiation:

Has a velocity equal to the speed of light.

15

If the photon frequency of electromagnetic radiation is increased tenfold, then the wavelength will:

Decrease to 1/10

16

Electromagnetic radiation with a frequency of 2,000 Hertz would have a wavelength of:

1.5 x 10^5 cm

17

The atomic number is the number of _____ contained in the nucleus.

Protons

18

An isotope of boron has 5 protons and 6 neutrons. The atomic umber of boron is:

5

19

An element with an atomic umber of 22 has how many electros in the second principal quantum number level (L shell)?

8

20

The nuclear particles that distinguish one element from another are the:

Protons

21

If the frequency of a wave is 1,000 Hertz and is traveling at 50,000 m/sec, then its wavelength is:

50 m

22

According to the rule of octets:

The valence shell is chemically inert

23

Which of the following is not a basic characteristic of the wave equation?
a. Velocity
b. Wavelength
c. Frequency
d. Energy

d. Energy

24

If an electron is gained or lost from an atom, that atom becomes:

An ion.

25

All of the following are energy forms EXCEPT:
a. Sound
b. Quantum
c. Electrical
d. Nuclear

a. Sound

26

Quarks may behave according to the _____ theory.

String

27

All of the following are true of the substance glucose (C6H12O6) EXCEPT:
a. The smallest subdivision of this molecule is glucose
b. It is a compound
c. It consists of 3 elements
d. It may be broken down into one atom of glucose

d. It may be broken down into one atom of glucose

28

When comparing iodine (Z=53) with barium (Z=56):
a. Barium has a lower k-shell binding energy
b. Iodine has more neutrons
c. Iodine has 5 orbitals with electrons
d. Barium has fewer protons

c. Iodine has 5 orbitals with electrons