science
Grade-9
Easy
Question
How many numbers of electrons and protons does aluminium ion has?
- 13, 13
- 13, 10
- 10,13
- 10, 10
Hint:
The number of electrons and protons in aluminum is 10 and 13 respectively
The correct answer is: 10,13
- The atomic number of aluminum is 13.
- It has 13 protons and in the fact, the number of electrons will be equal to that of protons, aluminum has 13 electrons.
- The charge of aluminum is 3+. It has 3 electrons in the valence shell.
- According to the octet rule, it loses 3 electrons to attain stability. So the number of electrons will be 10.
Related Questions to study
science
Which of the following elements are the isotopes?
Which of the following elements are the isotopes?
scienceGrade-9
science
Which among the following is a sub-atomic particle?
Which among the following is a sub-atomic particle?
scienceGrade-9
science
If the watermelon defines the atom, what does the seeds in the watermelon defines?
If the watermelon defines the atom, what does the seeds in the watermelon defines?
scienceGrade-9
science
Which element is used for the treatment of cancer:
Which element is used for the treatment of cancer:
scienceGrade-9
science
Who was the first scientist to propose the atomic model of an atom?
Who was the first scientist to propose the atomic model of an atom?
scienceGrade-9
science
Raisin bun model of atom was given by which one of the following scientists?
Raisin bun model of atom was given by which one of the following scientists?
scienceGrade-9
science
Thomsons model of atom is also called as
Thomsons model of atom is also called as
scienceGrade-9
science
Which one of the following is a sub-atomic particle?
Which one of the following is a sub-atomic particle?
scienceGrade-9
science
Which of the following statements is incorrect?
Which of the following statements is incorrect?
scienceGrade-9
science
Electrons, in which they revolve in a circular path is known as:
Electrons, in which they revolve in a circular path is known as:
scienceGrade-9
science
Who discovered an electron?
Who discovered an electron?
scienceGrade-9
science
How many electrons are there in the outermost shell of argon?
How many electrons are there in the outermost shell of argon?
scienceGrade-9
science
Where are the valence electrons of an atom present?
Where are the valence electrons of an atom present?
scienceGrade-9
science
How many electrons, protons, and neutrons, respectively, are there in a phosphorous atom?
How many electrons, protons, and neutrons, respectively, are there in a phosphorous atom?
scienceGrade-9
science
To attain stability, chlorine has to gain how many electrons?
To attain stability, chlorine has to gain how many electrons?
scienceGrade-9
