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_______________ make(s) up the nucleus of an atom.
- a. Protons and electrons
- b. Protons and neutrons
- c. DNA and RNA
- d. Neutrons and electrons
- e. DNA only
Introduction: Atom is the smallest structural unit of any matter. The nucleus is the centermost part of the atom. The atom consists of proton, electron, and neutron. Multiple numbers of atoms combine together and form the molecules.
Answer to Problem 1TY
Correct answer: The “protons and neutrons” forms the nucleus of an atom. Hence, the correct answer is option b.
Explanation of Solution
Reason for correct answer:
The nucleus of the atom is formed by the “neutrons and protons”. These two particles provide the mass to the atom and both the particles are heavier than the electron. The charge possessed by the proton is positive in nature. However, in the case of neutrons, the charge is not present. Both the particles are present in the nucleus of an atom and the electrons circulate around them in their orbitals.
Option b. is given as “Protons and neutrons”.
The “protons and neutrons” are found in the nucleus of an atom. Hence, the correct answer is option b.
Reason for incorrect answer:
Option a. is given as “Protons and electrons”.
The electrons are found in the orbitals present outside the nucleus. The protons and neutrons are present inside the nucleus. Hence, option a. is incorrect.
Option c. is given as, “DNA and RNA”.
DNA and RNA are made up of a number of atoms and they are found in the nucleus of the cell, not in the nucleus of the atom. So, the possibility of the presence of DNA and RNA inside the atom nucleus is negligible. Hence, option c. is incorrect.
Option d. is given as “Neutrons and electrons”.
Electrons are present on the orbitals and they surround the nucleus of an atom in their respective energy levels. The protons and neutrons are present inside the nucleus. Hence, option d. is incorrect.
Option e. is given as, “DNA only”.
The DNA stands for “deoxyribonucleic acid”. Presence of DNA molecule is found in case of the cellular nucleus, not in the atom nucleus. Hence, option e. is incorrect.
Hence, the options a., c., d., and e. are incorrect.
Inside the nucleus of an atom, the “protons and neutrons” are found.
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