Periodic classification of elements: Class 10 Chemistry Q&A
96 free answers on Periodic classification of elements (Chemistry) for Class 10 students, across CBSE, ICSE and State boards. Includes questions such as “The element which has the maximum number of valence electron is: (a)Na (b) P (c) Si (d) Al”, “Which of the following element not lose an electron easily? (a) Na (b) F (c) Mg (d) Al”, “Which of the following element would lose an electron easily? (a) Mg (b) Na (c) K (d) Ca”.
Question & Answer
Questions
- ChemistryClass 10ICSE
Which of the following set of elements is written correctly in the order of their increasing metallic character? (a) Mg, Al, Si (b) C, O, N (c) Na, Li, K Be, Mg, Ca
Option (d) is the answer.
- ChemistryClass 10ICSE
On moving from left to right in a period in the periodic table, the atomic number of elements increases. What happens to the size of the atoms of elements on moving from left to right in a period? (a) Increases (b) Decreases (c) Remains same First increases then decreases
Option (b) is the answer.
- ChemistryClass 10ICSE
Which one of the following does not increase while moving down the group of the periodic table: (a) Atomic radius (b) Metallic character (c) Valence electrons Shells in the atoms
Option (c) is the answer.
- ChemistryClass 10ICSE
• The element which form a basic oxide has the atomic number of: (a) 18 (b) 17 (c) 14 (d) 19
Option (d) is the answer.
- ChemistryClass 10ICSE
The element which can form an acidic oxide should be the one whose atomic number is: (a) 6 (b) 16 (c) 12 (d) 19
Option (b) is the answer.
- ChemistryClass 10ICSE
The correct formula of the oxide of Eka-aluminium element predicted by Mendeleev’s was: (a) EaO3 (b) Ea2O2 (c) Ea2O3 EaO
Option (c) is the answer.
- ChemistryClass 10ICSE
Which of the following are the correct characteristics of isotopes of an element? (i) Same atomic mass (ii) Same atomic number (iii) Same physical properties (iv) Same chemical properties(a) (i), (iii) and (iv) (b) (ii), (iii) and (iv) (c) (ii) and (iii) (ii) and (iv)
Option (d) is the answer.
- ChemistryClass 10ICSE
The atomic numbers of the elements Na, Mg, K and Ca are 11, 12, 19 and 20 respectively. The element having largest atomic radius is: (a) Mg (b) Na (c) K (d) Ca
Option (c) is the answer.
- ChemistryClass 10ICSE
The correct increasing order of the atomic radii of the elements oxygen, fluorine and nitrogen is: (a) O, F, N (b) N, F, O (c) O, N, F (d) F, O, N
Option (d) is the answer.
- ChemistryClass 10ICSE
The element which has the maximum number of valence electron is: (a)Na (b) P (c) Si (d) Al
Option (b) is the answer.
- ChemistryClass 10ICSE
Which of the following is the valence shell for the elements of second period of the modern periodic table? (a) M shell (b) K shell (c) L shell N shell
Option (c) is the answer.
- ChemistryClass 10ICSE
An element which is an essential constituent of all organic compounds belongs to following group of modern periodic table: (a) Group 4 (b) Group 14 (c) Group 15 Group 16
Option (b) is the answer.
- ChemistryClass 10ICSE
Where would you locate the element with electronic configuration 2, 8 in the modern periodic table? (a) Group 8 (b) Group 2 (c) Group 18 Group 10
Option (c) is the answer.
- ChemistryClass 10ICSE
Which of the following element not lose an electron easily? (a) Na (b) F (c) Mg (d) Al
Option (b) is the answer.
- ChemistryClass 10ICSE
Which of the following element would lose an electron easily? (a) Mg (b) Na (c) K (d) Ca
Option (c) is the answer.
- ChemistryClass 10ICSE
The elements A, B, C, D and E have atomic numbers 9, 11, 17, 12 and 13 respectively. The pair of elements which belongs to the same group in the periodic table is: (a) A and B (b) B and D (c) A and C D and E
Option (c) is the answer.
- ChemistryClass 10ICSE
Five elements A, B, C, D and E have atomic numbers 2, 3, 7, 10 and 18 respectively. The elements which belong to the same period of the periodic table are: (a) A, B, C (b) B, C, D (c) A, D, E (d) B, D, E
Option (b) is the answer.
- ChemistryClass 10ICSE
The atomic number of an element is 20. In modern periodic table, the element is placed in: (a) 2nd period (b) 4th period (c) 3rd period 1st period
Option (b) is the answer.
- ChemistryClass 10ICSE
The electronic configuration of the atom of an element X is 2, 8, 4. In modern periodic table, the element X is placed in: (a) 2nd group (b) 4th group (c) 14th group 8th group
Option (c) is the answer.
- ChemistryClass 10ICSE
Which of the following is not correct statement about the trends when going from left to right across the periods of the periodic table? (a) The elements become less metallic in nature (b) The number of valence electrons increases (c) The atom lose their electrons more easily The oxides become more acidic
Option (c) is the answer