Home
Class 10
CHEMISTRY
An element X (atomic number 17) reacts w...

An element X (atomic number 17) reacts with an element Y (atomic number 20) to form a compound.
(i) Write the position of these elements in the modern periodic table.
(ii) Write the formula of the compound formed. Justify your answer in each case.

Text Solution

Verified by Experts

(i) The position of elements X in the modern periodic table is group number 17 and period number 3. The position of element Y in the modern periodic table is group number 2 and period number 4. Electronic configuration of element X = 2, 8,7.
It has 3 shells so period number 3.
Halogens are kept in group 17.
Electronic configuration of element Y = 2, 8, 8,2
It has 4 shells so period number is 4.
The valence shell has 2 electrons so the group number is 2.
(ii) Formula of the compound :
`{:("Valency of element Y","Valency of element X"),("2","1"):}`
`thereforeYX_(2)`
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • PERIODIC CLASSIFICATION OF ELEMENTS

    OSWAAL PUBLICATION|Exercise TOPIC:2- LONG ANSWER TYPE QUESTIONS|5 Videos

  • PERIODIC CLASSIFICATION OF ELEMENTS

    OSWAAL PUBLICATION|Exercise NCERT CORNER -INTEXT QUESTIONS|13 Videos

  • PERIODIC CLASSIFICATION OF ELEMENTS

    OSWAAL PUBLICATION|Exercise TOPIC:2-SHORT ANSWER TYPE QUESTIONS-I|25 Videos

  • METALS AND NON-METALS

    OSWAAL PUBLICATION|Exercise NCERT CORNER (Textbook Exercises)|16 Videos

  • SOLVED PAPER SSLC KARNATAKA APRIL 2019

    OSWAAL PUBLICATION|Exercise QUESTIONS|49 Videos

Similar Questions

Explore conceptually related problems

An element X (atomic number 17) reacts with an element Y (atomic number 20) to form a Compound. i]Write the position of these elements in the Modern Periodic Table ii] Which one is a metal and which one is a non-metal? iii] Write the formula of the compound.

An element P (atomic number 20) reacts with an element Q (atomic number 17) to form a compound. Answer the following questions giving reason: Write the position of P and Q in the Modern Periodic Table and the molecular formula of the compound formed when P reacts with Q.

Knowledge Check

  • The atomic number of an element 'X' is 16. In the modern periodic table the elements belongs to this block and period.

    A
    p-block, `3^(rd)` period
    B
    p-block, `2^(nd)` period
    C
    s-block, `3^(rd)` period
    D
    s-block, `2^(nd)` period

  • The number of which of the following atomic particles plays a major role in classification of elements in the Modern Periodic Table?

    A
    neutron
    B
    electron
    C
    proton
    D
    all of the these

    • Similar Questions

    Explore conceptually related problems

    Consider two elements ‘A’ (Atomic number 17) and 'B' (Atomic number 19): (i) Write the positions of these elements in the modern periodic table giving justification. (ii) Write the formula of the compound formed when 'A' combines with 'B.' (iii) Draw the electron dot structure of the compound and state the nature of the bond formed between the two elements.

    Write the IUPASC name of the element with atomic number 104.

    The atomic number of an element 'X' is 20. (i) Determine the position of the element 'X' in the periodic table. (ii) Write the formula of the compound formed when 'X' reacts/combines with another element 'Y' (atomic number 8). (iii) What would be the nature (acidic or basic) of the compound formed ? Justify your answer.

    Some of the elements and their atomic numbers are mentioned in the following table : (i) How many valence electrons are there in the element 'R' ? (ii) What is the valency of 'P' ? (ii) Write the chemical formula of the compound formed by combining the elements ‘P' and 'Q'? (iv) Out of the two elements 'P' and 'S', which one is larger in size ?

    Three elements 'X', 'Y' and 'Z' have atomic numbers 7, 8 and 9 respectively. (i) State their positions (Group number and period number both) in the Modern Periodic Table. (ii) Arrange these elements in the decreasing order of their atomic radii. (iii) Write the formula of the compound formed when 'X' combines with 'Z'.

    b) Atoms of element B form hep lattice and those of element A occupies 2//3^(rd) of tetrahedral voids. Calculate the formula of the compound formed by A and B.

    Home
    Profile