Atomic Structure/Nuclear Chemistry

Question 1

How many neutrons are there in Lead-208?

Accepted Answer

126

Question 2

Which is NOT part of Dalton's atomic theory?

Accepted Answer

Matter is made of tiny, invisible particles.

Question 3

Isotopes of an atom have different numbers of ___________?

Accepted Answer

Neutrons

Question 4

He discovered electrons using a cathode-ray tube.

Accepted Answer

Thompson

Question 5

What is the difference between Hydrogen-1, Hydrogen-2, and Hydrogen-3?

Accepted Answer

Number of Neutrons

Question 6

Produces the most energy

Accepted Answer

Nuclear fusion

Question 7

One of the products of beta decay is always a(n)

Accepted Answer

electron

Question 8

How many electrons are there in Copper-63?

Accepted Answer

29

Question 9

Background radiation comes from which of the following sources?

Accepted Answer

All of these

Question 10

What isotope decays into these products: a beta particle and Xenon-131?

Accepted Answer

Iodine-131

Question 11

He discovered the nucleus while performing his famous "gold-foil experiment".

Accepted Answer

Rutherford

Question 12

What is the atomic number of Oxygen-16?

Accepted Answer

8

Question 13

Calculate the average atomic mass of 75% Cesium-133, 20% Cesium-132, 5% Cesium-134

Accepted Answer

132.85 amu

Question 14

Helium-4 is also known as a(n)

Accepted Answer

Alpha particle

Question 15

Polonium-210 undergoes alpha decay to become Helium-4 and what other product?

Accepted Answer

Lead-206

Questions 15