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Periodic Classification of Elements Science - Periodic Classification of Elements

Jharkhand Board (JAC) - STD 10 - Science (Jharkhand - English Medium). 190 questions in this chapter.

Question types

Periodic Classification of Elements question types

190 questions across 6 question groups — pick any mix to generate a Science paper with step-by-step answer keys.

190
Questions
6
Question groups
5
Question types
Sample Questions

Periodic Classification of Elements questions

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

Q 2M.C.Q1 Mark
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.
  • ✓
    L shell.
  • D
    N shell.

Answer: C.

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Q 3M.C.Q1 Mark
An element which is an essential constituent of all organic compounds belongs to following group of modern periodic table.
  • A
    Group 4.
  • ✓
    Group 14.
  • C
    Group 15.
  • D
    Group 16.

Answer: B.

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Q 4M.C.Q1 Mark
The electronic configuration of the atom of an element $X$ is $2, 8, 4.$ In modern periodic table, the element $X$ is places in:
  • A
    $2^{nd}$ group.
  • B
    $4^{th}$ group.
  • ✓
    $14^{th}$ group.
  • D
    $8^{th}$ group.

Answer: C.

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Q 5M.C.Q1 Mark
The three imaginary elements X, Y and Z represent a Dobernener's triad. If the atomic mass of element X is 14 and that of element Y is 46, then the atomic mass of element Z will be:
  • A
    28.
  • B
    60.
  • ✓
    78.
  • D
    72.

Answer: C.

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Q 10Fill in the blank1 Mark
Fill in the blanks in the following statements:
In going across a period (right to left) in periodic table, the atomic size of the atom _________.
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Q 19[2 Mark Questions]2 Marks
The elements A, B and C belong to groups 1, 14 and 17 respectively of the periodic table.
  1. Which two elements will form a covalent compound?
  2. Which two elements will form an ionic compound?
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Q 20[2 Mark Questions]2 Marks
An element A has an atomic number of 6. Another element B has 17 electrons in its one neutral atom.
  1. N which groups of the periodic table would you expect to find these elements?
  2. What type of bond is formed between A and B?
  3. Suggest a formula of the compound formed between A and B.
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Q 24[3 Mark Questions]3 Marks
The atomic masses of three elements X, Y and Z having similar chemical properties are 7, 23 and 39 respectively.
  1. Calculate the average atomic mass of elements X and Z.
  2. How does the average atomic mass of elements X and Z compare with the atomic mass of element Y?
  3. Which law of classification of elements is illustrated by this example?
  4. What could the elements X, Y and Z be?
  5. Give another example of a set of elements which can be classified according to this law.
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Q 27[5 marks Questions]5 Marks
Can the following groups of elements be classified as Dobereiner's triads?
  1. Na, Si, Cl.
  2. Be, Mg, Ca.
Give reason for your answer.

(Atomic masses: Be 9; Na 23; Mg 24; Si 28; Cl 35. 5; Ca 40)
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Q 28[5 marks Questions]5 Marks
The following diagram shows a part of the periodic table in which the elements are arranged according to their atomic numbers.
(The letters given here are not the chemical symbols of the elements):
a
3
b
4
 
c
5
d
6
e
7
f
8
g
9
h
10
i
11
j
12
 
k
13
l
14
m
15
n
16
o
17
p
18
  1. Which element has a bigger atom, a or f?
  2. Which element has a higher valency, k or o?
  3. Which element is more metallic, i or k?
  4. Which element is more non-metallic, d or g?
  5. Select a letter which represents a metal of valency 2.
  6. Select a letter which represents a non-metal of valency 2.
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Q 29[5 marks Questions]5 Marks
Mendeleev predicted the existence of certain elements not known at that time and named two of them as eka - aluminium, and eka - silicon.
  1. Name the element which has taken the place of (i) eka - aluminium, and (ii) eka - silicon.
  2. Mention the period/ periods of these elements in the modern periodic table.
  3. Write the group/ groups of these elements in the modern periodic table.
  4. Classify these elements as metals, non - metals or metalloids.
  5. How many valence electrons are present in the atoms of each of these elements?​​​​​​
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Q 30[5 marks Questions]5 Marks
A part of the early classification of elements has been given below:
$\text{H}\ \ \ \ \ \ \ \text{Li} \ \ \ \ \ \ \ \text{Be} \ \ \ \ \ \ \ \ \ \text{B}\ \ \ \ \ \ \ \text{C}\ \ \ \ \ \ \ \text{N}\ \ \ \ \ \ \ \text{O}\\\text{F}\ \ \ \ \ \ \ \text{Na}\ \ \ \ \ \ \text{Mg}\ \ \ \ \ \ \ \text{Al}\ \ \ \ \ \ \text{Si}\ \ \ \ \ \ \ \text{P}\ \ \ \ \ \ \ \ \text{S}$
  1. Which law of classification of element is illustrated by the above arrangement of elements?
  2. Name the scientist who proposed such a classification of elements.
  3. Why is such a classification of elements compared with a characteristics of musical scale?
  4. State one limitation of this classification of elements.
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