The particles in the atomic nucleus are …………….. .
- Aprotons and electrons
- Belectrons
- Celectrons and neutrons
- ✓protons and neutrons
Answer: D.
View full solution →Question types
Inside the Atom question types
138 questions across 12 question groups — pick any mix to generate a Science paper with step-by-step answer keys.
138
Questions
12
Question groups
5
Question types
01
MCQ
18 Q→02Write the following Statement Is True Or False. & Write True Statement.
21 Q→03Answer the following in one sentece.
25 Q→04Answer the following questions in detail.
3 Q→05Fill In The Blanks.
27 Q→06complete the Graph/Table.
7 Q→07Draw Diagram.
4 Q→08Match The Columns/pair.
4 Q→09Answer the following question.
8 Q→10Complete The Correlation.
7 Q→11Distinguish Between.
4 Q→12Give Scientific Reason.
10 Q→Sample Questions
Inside the Atom questions
One sample from each question group in this chapter. Select any group above to see the full set with answer keys.
When writing the symbol of its …………… and ………….. are written.
- ✓atomic number, atomic mass number
- Bprotons, electrons
- Cprotons, neutrons
- Datomic number, electrons
Answer: A.
View full solution →The nucleus of an atom contains 18 protons and 22 neutrons. The atomic number of the element is ……………… .
- ✓18
- B40
- C22
- D4
Answer: A.
View full solution →The nucleus of an atom contains 19 protons and 21 neutrons. The atomic mass number of the element is ………….. .
- A19
- B21
- ✓40
- D39
Answer: C.
View full solution →Isotopes of element have …………….. .
- Adifferent atomic numbers and different atomic mass
- Bdifferent atomic numbers but the same atomic mass number
- ✓the same atomic number but different atomic mass numbers
- Dthe same atomic number and the same atomic mass number
Answer: C.
View full solution →Uranium-235 is used in the production of electricity.
The radioactive isotope Sodium-24 is used in the medical treatment of cancer.
The capacity of the second orbit is 18 electrons.
Electrons have different energies according to their orbits.
The nth orbit contains at the most $2n^2$ electrons.
View full solution →Name the place and the first nuclear reactor in India.
Which element is used as fuel in atomic reactors?
How many electrons could there be in the outermost orbit of an element whose valency is 3?
An atom contains 2 protons, 2 electrons and 3 neutrons. State its atomic number and atomic mass number.
The atomic mass number of an element is 18, and the element contains 8 electrons. What is the number of protons and neutrons in it?
Explain Dalton’s atomic theory.
OR
Write the postulates of Dalton’s atomic theory.
OR
Write the postulates of Dalton’s atomic theory.
The atom of the element ……………. has eight electrons in the outermost shell.
The maximum capacity of the M shell is ………………… electrons.
All atoms, except ………….. contain neutrons in their nuclei.
According to the atomic model of …………….., electrons are embedded in a gel of positive charge.
Atomic masses are measured in a unit called …………… .
Complete the table:
| Isotopes | Proton number | Neutron number |
| 11H | ||
| 21H | ||
| 3517Cl | ||
| 3517Cl | ||
| 3717Cl |
When the number of the valence electrons in an element ‘x’ is 4 or more than 4, does’(8 – x)’ match with the valency of that element? How many electrons are used to complete the octet?
In table 4 column you have written of that element? How many electrons identified valency from its molecular are used to complete the octet? formulae. When the number of the valency electrons in an element ‘x’ is 4 or less than 4, does ‘x’ match with the valency of that element?
Use your brain power!
Use your brain power!
Complete the following table:
Complete the table:
Diagrammatic sketch of electronic configuration of argon (Atomic number 18).
Diagrammatic sketch of electronic configuration of magnesium (Atomic number 12).
Thomson’s atomic model.
Explain Rutherfordrs scattering experiment.
| Column I | Column II |
| 1. Alpha particles | a. Inert element |
| 2. Uranium-235 | b. Negatively charged particles |
| 3. Helium | c. Positively charged particles |
| 4. Isotopes | d. Krypton – 92, Barium 141 |
| e. U-233, Th-232 | |
| f. ${ }^{12} C ,{ }^{13} C { }^{14} C$ |
| Column I | Column II |
| 1. Atom | a. Treatment of goitre |
| 2. Isotopes of iodine | b. Protons + Neutrons |
| 3. Atomic mass number | c. Different number of neutrons |
| 4. Isotopes | d. Electrically neutral |
| Column I | Column II |
| 1. Thomson | a. Well defined orbits |
| 2. Rutherford | b. Neutron |
| 3. Chadwick | c. Scattering experiment |
| 4. Bohr | d. Electron |
| Column I | Column II |
| 1. Proton | a. Negatively charged |
| 2. Electron | b. Neutral |
| 3. Neutron | c. Positively charged |
What is meant by subatomic particle? Give brief information of three subatomic particles with reference to electrical charge, mass and location.
What is meant by atomic mass i number? Explain how the atomic number and mass number of carbon are 6 and 12 respectively.
What is meant by valency of an element? What is the relationship between the number of valence electron and valency?
What is the difference in the atomic models of Thomson and Rutherford?
What is meant by subatomic particle? Give brief information of three subatomic particles with reference to electrical charge, mass and location.
Protons : Positive : : ……………. : Neutral.
NaH : Valency of $Na : 1:: MgCl _2$ : Valency of Mg
View full solution →Atomic radius : pm : Atomic mass : ……………. .
Nitrogen : Valency three : : Fluorine : …………….. .
Atomic number and Atomic mass number:
Proton and Electron:
Neutron and Electron:
Proton and Neutron:
Two electrons in helium atom are placed in only one shell while three electrons in lithium atom occupy two shells.
In Rutherford’s experiment, some alpha particles colliding with the thin gold foil are turned back.
Atoms are stable though negatively charged electron are revolving within it.
Atomic mass number is a whole number.
Atom is electrically neutral.
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