Please help and show work. I need to learn how you got the answers. Thank you ve

Question

Please help and show work. I need to learn how you got the answers. Thank you very much

QUESTION 9

The lightest man-made element is Technetium (Tc), which lies near the middle of the periodic table near molybdenum. The reason this element is not found in nature is that it is radioactive with a relatively short half-life in geological time scales. Even without looking at the periodic table, you would expect this element to have an ______ number of protons and an ________ number of neutrons.

even, odd

odd, odd

odd, even

even, even

1 points   

QUESTION 10

Cobalt-59 is impacted by _________ to create Cobalt-60.

Neutrons

Gamma rays

Positron particles

Alpha particles

Beta particles

1 points   

QUESTION 11

An atom of nickel-63 emitts a beta particle. What is the resulting element and mass?

Nickel-63

Iron-59

Iron-56

Copper-64

Copper-63

1 points   

QUESTION 12

Which of the following subatomic particles would experience the greatest force when exposed to an electric field? (question from MCAT General Chemistry Review Notes, 1997 edition, Kaplan Medical)

An alpha particle

A beta particle

A neutron

A proton

2 points   

QUESTION 13

Cesium-137 has a half-life of 30 years. How long will it take for only 0.3 g to remain from a sample that originally had a mass of 2.4 g? (Question from MCAT Physical Sciences Review, 2008 Version, The Princeton Review.)

90 years

60 years

120 years

240 years

2 points   

QUESTION 14

Rutherford first observed nuclear transmutation when 14N was bombarded with alpha particles ( 4He nuclei). The reaction is written as: 4He + 14N = 17O + ?. What is the missing particle? (Question from Barron’s New MCAT 2007, 11th edition)

He-4 (alpha particle)

Proton

Electron

Neutron

2 points   

QUESTION 15

The missing product in the reaction would be found in which group of the periodic table?  

          Reaction:    24Na = beta particle + __________.

alkali metals

None of the groups listed here.

nobel gases

alkali earth

halogens

1 points   

QUESTION 16

By what process does Thorium-230 decay to radium-226?

electron capture

gamma emission

beta emission

alpha emission

positron emission

1 points   

QUESTION 17

All atoms of a given element have the same __________.

number of neutrons

mass number

number of nucleons

atomic number

atomic mass

1 points   

even, odd

odd, odd

odd, even

even, even

Explanation / Answer

1.neutrons

2.nickel63

3.alpha particle

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