Question
What is 1 Dalton?
- 1.360539040(20) ×10−27 kg
- 1.640539040(20) ×10−27 kg
- 1.660539040(20) ×10−27 kg
- 1.660539040(20) ×10−27 kg
Hint:
1 Dalton is known to be used for measuring atomic mass.
The correct answer is: 1.660539040(20) ×10−27 kg
- 1 Dalton is equal to 1.660539040(20) ×10−27 kg.
- 1 Dalton is defined as one-twelfth of the mass of the free, unbound neutral atom of Carbon 12 in its ground state at rest.
- This unit is used for the process of measuring the mass of an atom and it comes out to be equal to 1.660539040(20) ×10-27 kg.
1 Dalton is also known as the unified atomic mass unit.
Related Questions to study
Who believed all substances like air, water, earth, and fire are small amounts of matter?
Aristotle did not believe in Dalton's atomic theory.
Who believed all substances like air, water, earth, and fire are small amounts of matter?
Aristotle did not believe in Dalton's atomic theory.
Who has called the smaller particle or the piece “Atomos”?
There is no other element in this universe that is smaller than an atom.
Who has called the smaller particle or the piece “Atomos”?
There is no other element in this universe that is smaller than an atom.
According to law of conservation of mass, the mass of the reactant side must always be ________ to the product side.
The law of conservation of mass was proposed by Antoine Lavoisier.
According to law of conservation of mass, the mass of the reactant side must always be ________ to the product side.
The law of conservation of mass was proposed by Antoine Lavoisier.
All atoms of the same element are identical in __________ and ______.
The elements with the same atomic number and different atomic mass are known as isotopes.
All atoms of the same element are identical in __________ and ______.
The elements with the same atomic number and different atomic mass are known as isotopes.
Which of the following was not explained by Dalton’s atomic theory?
Dalton's atomic theory has many limitations including the inability to explain the presence of isotopes and allotropes.
Which of the following was not explained by Dalton’s atomic theory?
Dalton's atomic theory has many limitations including the inability to explain the presence of isotopes and allotropes.
Which of the following failed the existence of Dalton’s theory?
Dalton's theory is even disproved by the presence of isotopes.
Which of the following failed the existence of Dalton’s theory?
Dalton's theory is even disproved by the presence of isotopes.
“Dalton’s theory of same element has same mass and properties” was proved wrong by the invention of
Atomic number is determined by the number of protons and atomic mass is determined by mass of nuclei.
“Dalton’s theory of same element has same mass and properties” was proved wrong by the invention of
Atomic number is determined by the number of protons and atomic mass is determined by mass of nuclei.
Who proposed “Atoms are indivisible”.
The atoms are chemically neutral. The positive charge is balanced by the negative charge.
Who proposed “Atoms are indivisible”.
The atoms are chemically neutral. The positive charge is balanced by the negative charge.
________ are explanations of observations that are supported by reliable evidence.
To become a theory, a hypothesis needs to be tested a good number of times.
________ are explanations of observations that are supported by reliable evidence.
To become a theory, a hypothesis needs to be tested a good number of times.
All matter is made of small particles called
The positive charge in the atom is known as proton and the negative charge is known as the electron.
All matter is made of small particles called
The positive charge in the atom is known as proton and the negative charge is known as the electron.
