science
Grade-9
Easy
Question
Mass number of an element is represented with
- Z
- A
- X
- V
Hint:
The mass number of an element is represented by the letter A.
The correct answer is: A
- The mass number also known as nucleon number is the total of protons and neutrons in an atom.
- It is represented by the letter 'A'.
- The mass number and atomic number with the element can be represented as ZXA, here the Z is atomic number and X represents the element.
Related Questions to study
science
Mass of protons and neutron is _________ times more than the electrons
Mass of protons and neutron is _________ times more than the electrons
scienceGrade-9
science
The number of electrons present outside the nucleus that revolves around it is called
The number of electrons present outside the nucleus that revolves around it is called
scienceGrade-9
science
The number of protons and neutrons combining in an atom is called
The number of protons and neutrons combining in an atom is called
scienceGrade-9
science
Which of the following isotopes is used for the treatment of cancer?
Which of the following isotopes is used for the treatment of cancer?
scienceGrade-9
science
The number of electrons in the valence shell is called
The number of electrons in the valence shell is called
scienceGrade-9
science
How many numbers of core electrons are there in the Ferrum?
How many numbers of core electrons are there in the Ferrum?
scienceGrade-9
science
Filling of an electron into the atomic orbital is called as ________
Filling of an electron into the atomic orbital is called as ________
scienceGrade-9
science
Scientist that explained about the line spectrum of the hydrogen atom
Scientist that explained about the line spectrum of the hydrogen atom
scienceGrade-9
science
The orbits in an atom are represented by
The orbits in an atom are represented by
scienceGrade-9
science
The electronic configuration of an element is 2, 8, 13, 1. Which of the following is similar to the above configuration?
The electronic configuration of an element is 2, 8, 13, 1. Which of the following is similar to the above configuration?
scienceGrade-9
science
Based on the postulates of Bohr’s atomic model, which of the following is incorrect
Based on the postulates of Bohr’s atomic model, which of the following is incorrect
scienceGrade-9
science
Which one of the following are having the same number of electrons in its valence shell?
Which one of the following are having the same number of electrons in its valence shell?
scienceGrade-9
science
Which one of the following is not correct as per the limitations of Bohr’s model of atom?
Which one of the following is not correct as per the limitations of Bohr’s model of atom?
scienceGrade-9
science
Which shell has three subshells
Which shell has three subshells
scienceGrade-9
science
Principal quantum number is represented with:
Principal quantum number is represented with:
scienceGrade-9
