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Question
Fill in the blanks- The number of protons in the nucleus of an atom is called its ....................
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Solution
The number of protons in the nucleus of an atom is called its atomic number.
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RELATED QUESTIONS
Explain the Atomic number with example.
What are the atomic numbers of elements whose outermost electrons is represented by 3p5?
Multiple Choice Questions
The sum of number of protons and number of neutrons present in the nucleus of an atom is called its
State the mass number, the atomic number, number of neutrons and electronic configuration of the following atoms.
`""^12""_6C, ""^16""_8O, ""^19""_9F, ""^20""_10Ne, ""_13""Al""^27, ""_17""Cl""^35`
Also, draw atomic diagrams for them.
The diagram represents an isotope of hydrogen [H]. Answer the following:
Atomic no. = 1
Mass no. = 1
Are isotopes atoms of the same element or different elements.
Draw the structure of the following atoms showing the nucleus containing – protons, neutrons and the orbits with the respective electron:
Silicon [At. no. = 14, Mass no. = 28]
The atomic number and the mass number of an element is 26 and 56 respectively. Calculate the number of electrons, protons and neutrons in its atom. Draw the structure.
Match the following:
| Column A | Column B | ||
| 1. | Mass of proton | a. | +1 |
| 2. | Mass of electron | b. | -1 |
| 3. | Charge of electron | c. | 9.31 x 10-28g |
| 4. | Charge of proton | d. | 1.67 x 10-24g |
If element M has mass number 24 and atomic number 12, how many neutrons does its atom contain?
In which one of the following, the number of protons is greater than the number of neutrons but number of protons is less than the number of electrons?
