Structure of Atom Quiz

What is the maximum number of electrons in the M-shell of an atom?

• 6

• 8

• 18

• 32

What is the number of electrons in the valence shell of boron (B)?

• 1

• 0

• 3

• 2

Protium, Deuterium, and Tritium are types of _

• isobar

• isotope

• isotone

• isomer

Canal rays discovered by E. Goldstein contained particles that were:

• neutral

• positively charged

• negatively charged

• none of these

An atom has atomic mass 16u and atomic number of 8. How many neutrons are present in the atom?

• 10

• 7

• 8

• 9

The alpha particles used by Rutherford in his Gold Foil experiment are:

• protons

• helium atoms

• helium ions

• neutrons

What is the electronic configuration of Magnesium?

• 2, 3

• 2, 8, 1

• 2, 8, 2

• 2, 8, 3

Who discovered the existence of neutrons in the nucleus of an atom?

• Chadwick

• Rutherford

• Bohr

• Goldstein

What are defined as atoms having the same mass number but different atomic numbers?

• isobar

• isotope

• isotone

• isomer

An atom has atomic number 20, what is the number of electrons in the M-shell?

• 6

• 0

• 2

• 8