Download App

Structure of the Atom Science - Structure of the Atom

Rajasthan Board (RBSE) - STD 9 - Science (Rajasthan - English Medium). 170 questions in this chapter.

Question types

Structure of the Atom question types

170 questions across 7 question groups — pick any mix to generate a Science paper with step-by-step answer keys.

170
Questions
7
Question groups
5
Question types
Sample Questions

Structure of the Atom questions

One sample from each question group in this chapter. Select any group above to see the full set with answer keys.

Q 1M.C.Q. [1 M]1 Mark
The four atomic species can be represented as follows. Out of these, the two species which can be termed isobars are:
  1. $^{201}_{\ 60}\text{X}$
  2. $^{201}_{\ 61}\text{X}$
  3. $^{200}_{\ 58}\text{X}$
  4. $^{203}_{\ 60}\text{X}$
  1. (i) and (ii)
  2. (ii) and (iii)
  3. (i) and (iii)
  4. (i) and (iv)
View full solution →
Q 3M.C.Q. [1 M]1 Mark
The number of electrons in the atom of an element X is 15 and the number of neutrons is 16. Which of the following is the correct representation of an atom of this element?
  1. $^{31}_{15}\text{X}$
  2. $^{31}_{16}\text{X}$
  3. $^{16}_{15}\text{X}$
  4. $^{15}_{16}\text{X}$
View full solution →
Q 4M.C.Q. [1 M]1 Mark
The ion of an element has 3 positive charges. The mass number of atom of this element is 27 and the number of neutrons is 14. What is the number of electrons in the ion?
  1. 13
  2. 10
  3. 14
  4. 16
View full solution →
Q 6true or false1 Mark
State whether the following statements are true or false:
Thomson proposed that the nucleus of an atom contains protons and neutrons.
View full solution →
Q 7true or false1 Mark
State whether the following statement is true or false:
Radioactive isotope of iodine is used for making the medicine called tincture iodine.
View full solution →
Q 8true or false1 Mark
State whether the following statements are true or false:
The anode rays obtained from all the gases consist of positively charged particles called protons.
View full solution →
Q 9true or false1 Mark
State whether the following statements are true or false:
The cathode rays obtained from all the gases consist of negatively charged particles called electrons.
View full solution →
Q 12Fill in the blank1 Mark
Fill in the blanks in the following statements:
An atom of an element has 11 protons, 11 electrons and 12 neutrons. The atomic mass of the atom is __________.
View full solution →
Q 20Que-Ans (Each of 2 Mark )2 Marks
Composition of the nuclei of two atomic species A and B is given as under:
 
A
B
Protons
18
20
Neutrons
22
20
Give the mass numbers of A and B. What is the relation between the two species and which element or elements they represent?
View full solution →
Q 26Que-Ans (Each of 3 Mark )3 Marks
Three different atoms of oxygen are represented as:$^{16}_{\ 8}\text{O},\ ^{17}_{\ 8}\text{O}\text{ and }^{18}_{\ 8}\text{O}$
  1. What do the subscripts $($lower figures$)$ and superscripts $($upper figures$)$ represent?
  2. What factor is responsible for the change in the superscripts $16, 17$ and $18,$ though the element is the same$?$
  3. What is the usual name for such atoms of an element?
  4. Give the nuclear composition of $​​^{18}_{\ 8}\text{O}$
View full solution →
Q 29Que-Ans (Each of 4 Mark )4 Marks
The atom of an element $X$ has $7$ electrons in its M$$ shell:
  1. Write the electronic configuration of element $X.$
  2. What is the atomic number of element $X?$
  3. Is it a metal or a non-metal$?$
  4. What type of ion will be formed by an atom of element $X?$ Write the symbol of the ion formed.
  5. What could element $X$ be$?$
View full solution →
Q 30Que-Ans (Each of 4 Mark )4 Marks
An atom of element $E$ contains $3$ protons, $3$ electrons and $4$ neutrons:
  1. What is its atomic number$?$
  2. What is its mass number$?$
  3. Write the electronic configuration of the element $E.$
  4. State whether element $E$ is a metal or non-metal. Why$?$
  5. What type of ion, cation or anion, will be formed by an atom of element $E?$ Why$?$
  6. Write the symbol of the ion formed by an atom of element $E.$
  7. What could element $X$ be$?$
View full solution →
Q 31Que-Ans (Each of 4 Mark )4 Marks
The electronic configuration of an element Z is 2, 8, 8.
  1. What is the atomic number of the element?
  2. State whether element Z is a metal or a non-metal.
  3. What type of ion (if any) will be formed by an atom of element Z? Why?
  4. What is special about the outermost electron shell or the atom of this element?
  5. Give the name and symbol of element Z.
  6. Name the group of elements to which Z belongs.
View full solution →
Browse all question groups ↑

Generate a Structure of the Atom paper free

Pick question groups from the list above, set marks and difficulty, and export a branded PDF with step-by-step answer keys. First 3 chapters free — no signup.

Download App
Generate Paper FreeAll Science chapters