LRA 211- WEEK 1 QUIZ WITH
COMPLETE SOLUTIONS 100%
CORRECT RATED A+
1. The earliest atomic theory based on an arrangement similar to the solar
system is attributed to:
Answer: Rutherford
Solution:
Ernest Rutherford is credited with proposing the earliest atomic theory that
resembled the solar system. Based on his famous gold foil experiment,
Rutherford suggested that the atom consists of a small, dense, positively
charged nucleus surrounded by orbiting electrons, much like the solar
system's arrangement with the Sun at the center and planets orbiting around
it.
2. The three fundamental particles of the atom are the:
Answer: Neutron, Electron, Proton
Solution:
Atoms are composed of three fundamental subatomic particles:
o Protons: Positively charged particles found in the nucleus.
o Neutrons: Neutral (uncharged) particles also located in the nucleus.
o Electrons: Negatively charged particles that orbit the nucleus in
shells.
3. The atomic nucleus contains:
Answer: Protons and neutrons
Solution:
The nucleus of an atom is composed of two types of subatomic particles:
o Protons (positively charged), which define the element.
COMPLETE SOLUTIONS 100%
CORRECT RATED A+
1. The earliest atomic theory based on an arrangement similar to the solar
system is attributed to:
Answer: Rutherford
Solution:
Ernest Rutherford is credited with proposing the earliest atomic theory that
resembled the solar system. Based on his famous gold foil experiment,
Rutherford suggested that the atom consists of a small, dense, positively
charged nucleus surrounded by orbiting electrons, much like the solar
system's arrangement with the Sun at the center and planets orbiting around
it.
2. The three fundamental particles of the atom are the:
Answer: Neutron, Electron, Proton
Solution:
Atoms are composed of three fundamental subatomic particles:
o Protons: Positively charged particles found in the nucleus.
o Neutrons: Neutral (uncharged) particles also located in the nucleus.
o Electrons: Negatively charged particles that orbit the nucleus in
shells.
3. The atomic nucleus contains:
Answer: Protons and neutrons
Solution:
The nucleus of an atom is composed of two types of subatomic particles:
o Protons (positively charged), which define the element.
