Multiple Choice
What happens to the atomic number (Z) and the mass number (A) when a nucleus emits a beta particle (electron) ?
A) Z increases by 1; A is unchanged.
B) Z is unchanged; A is unchanged.
C) Z decreases by 2; A decreases by 4.
D) Z decreases by 1; A is unchanged.
Correct Answer:
Verified
Correct Answer:
Verified
Q147: Who discovered radium?<br>A) Marie and Pierre Curie<br>B)
Q148: Which type of atom is the standard
Q149: How many neutrons are there in an
Q150: Which isotope of hydrogen is radioactive?<br>A) Protium<br>B)
Q151: The number of electrons in an atom
Q153: How many protons are there in an
Q154: Fusion reactors of the future are likely
Q155: The time it takes for one-half of
Q156: Complete the equation: <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB8644/.jpg" alt="Complete the
Q157: An electron is emitted by an atomic