SSLC Chemistry Solution Chapter1 Periodic Table and Electronic Configuration


SSLC Chemistry Solution Chapter1 Periodic Table and Electronic Configuration

Periodic Table and Electronic Configuration is the first chapter in the textbook of SSLC syllabus Science. Studying the level of middle school is a daunting task, but it's not difficult if you know how to approach it correctly. This periodic table and electronic configuration chapter aim to explain the basics of what students will encounter in their studies, so they can better understand chemistry and the world around them.

The first chapter of the Kerala SSLC exam syllabus has been released recently. This chapter is on Periodic Table and Electronic Configuration. If you are preparing for the Kerala SSLC exam, this page will help you in understanding the concept better. Here we have provided answers to all the questions in the chapter along with detailed explanations.

Board SCERT, Kerala
Text Book SCERT Based
Class SSLC 
Subject Chemistry Solution
Chapter Chapter 1
Chapter Name Periodic Table and Electronic Configuration
Category Kerala SSLC

Kerala Syllabus SSLC Class 10 Chemistry Textbook Solution Chapter 1 Periodic Table and Electronic Configuration

Qn 1.

Based on the hints given, find out the atomic number and write down the subshell electronic configuration of elements (The symbols used are not real).
i)  A - period 3 group 17
ii) B - period 4 group 6

  • Answer)

    i) A atomic number = 17

     1s2 2s2 2p3s3p5

    i) A atomic number = 24

    1s2s2p3s3p3d5  4s1

Qn 2.

When the last electron of an atom was filled in the 3d subshell, the subshell electronic configuration was 3d8. Answer the questions related to this atom

  • Complete subshell electronic configuration 
  • Atomic number
  • Block
  • Period number
  • Group number
  • Answer)
    • 1s2 2s2 2p63s23p63d84s2
    • Atomic number - 28
    • Block - d Block
    • Period number - 4
    • Group number- 10

Qn 3.

Pick out the wrong subshell electronic configuration from those given below.
a) 1s2 2s2 2p7

b) 1s2 2s2 2p2

c)1s2 2s2 2p5 3s1

d)1s2 2s2 2p6 3s2 3p6 3d2 4s1

e)1s2 2s2 2p6 3s2 3p6 3d2 4s2

  • Answer)

    a) 1s2 2s2 2p7

    c)1s2 2s2 2p5 3s1

    d)1s2 2s2 2p6 3s2 3p6 3d2 4s1

Qn 4.

The element X in group 17 has 3 shells. If so,
a) write the subshell electronic configuration of the element'
b) Write the period number.
c) What will be the chemical formula of the compound formed if the element X reacts with Y of the third period which contains one electron in the p subshell?

  • Answer)

    a) 1s2 2s2 2p6 3s2 3p5

    b) 3

    c) YX3

Qn 5.

The element Cu with atomic number 29 undergoes a chemical reaction to form an ion with oxidation number +2.
a) Write down the subshell electronic configuration of this ion?
b) can this element show variable valency? Why?
c) Write down the chemical formula of one compound formed when this element reacts with chlorine(17Cl).

  • Answer)

    a) Cu 1s2 2s2 2p6 3s2 3p6 3d10 4s1
       Cu2+  1s2 2s2 2p6 3s2 3p6 3d9
    b) Yes. it loses both outermost 's' electrons and penultimate 'd' electrons in chemical reaction.
    c) CuCl2 or CuCl 

Qn 6.

Certain subshells are given below.
a) Which are the subshells that are not possible?
b) Give reason.

  • Answer)

    a) Not possible 2d,3f

    2nd shell does not contain a 'd' subshell

    3rd shell does not contain an 'F' subshell


SSLC Chemistry Textbook Solution

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