image

    Have a query? Ask a Tutor!!

    Access to best educators and exclusive paper discussions

    Can’t find what you’re looking for?

    Our tutors are from top schools around the world, and they are waiting for you 24/7, anytime, anywhere.

    • Homework- One to One Solutions
    • Understand concepts to solve better
    • Get your doubts solved instantly
    Chemistry
    Grade-9
    Easy

    Question

    Which one is correct about Mendeleev's periodic law?

    1. Properties of elements are the periodic function of their atomic mass.
    2. Physical and chemical properties of elements are periodic functions of their atomic number.
    3. Physical properties of elements are the periodic functions of their atomic mass.
    4. Chemical properties of elements are the periodic function of their atomic number.

    Hint:

    Properties are function of their atomic mass.

    The correct answer is: Properties of elements are the periodic function of their atomic mass.

      • Modern day periodic table was invented by Mendeleev. There are 118 elements arranged in 7 periods and 18 groups.
      • From left to right atomic number increases by 1.
      • Down the group valence electrons remains constant.
      • Properties of elements are the periodic function of their atomic mass. 

      Related Questions to study

      Grade-9
      Chemistry

      Elements in the same group have __________.

      1. Similar Properties
      2. Same number of shells
      3. Similar Mass
      4. Same number of protons

      Elements in the same group have __________.

      ChemistryGrade-9
      1. Similar Properties
      2. Same number of shells
      3. Similar Mass
      4. Same number of protons
      Grade-9
      Chemistry

      The vertical rows on the periodic table are called ___________.

      1. Periods
      2. Sentences
      3. Fences
      4. Groups

      The vertical rows on the periodic table are called ___________.

      ChemistryGrade-9
      1. Periods
      2. Sentences
      3. Fences
      4. Groups
      Grade-9
      Chemistry

      Identify number 16 on the periodic table square below.

      1. Atomic mass
      2. Element name
      3. Chemical symbol
      4. Atomic number

      Identify number 16 on the periodic table square below.

      ChemistryGrade-9
      1. Atomic mass
      2. Element name
      3. Chemical symbol
      4. Atomic number
      parallel
      Grade-9
      Chemistry

      This group of elements sit along a stair step line on the periodic table and have properties of both metals and non-metals:

      1. Radioactive elements
      2. Halogens
      3. Transition metals
      4. Metalloids

      This group of elements sit along a stair step line on the periodic table and have properties of both metals and non-metals:

      ChemistryGrade-9
      1. Radioactive elements
      2. Halogens
      3. Transition metals
      4. Metalloids
      Grade-9
      Chemistry

      Identify number 14 on the periodic table square below.

      1. Atomic mass
      2. Chemical symbol
      3. Atomic number
      4. Element name

      Identify number 14 on the periodic table square below.

      ChemistryGrade-9
      1. Atomic mass
      2. Chemical symbol
      3. Atomic number
      4. Element name
      Grade-9
      Chemistry

      This group of elements have properties that are opposite those of metals:

      1. Halogens
      2. Non-metals
      3. Metalloids
      4. Radioactive elements

      This group of elements have properties that are opposite those of metals:

      ChemistryGrade-9
      1. Halogens
      2. Non-metals
      3. Metalloids
      4. Radioactive elements
      parallel
      Grade-9
      Chemistry

      Which of the following is true?

      1. Electrons attract neutrons
      2. Neutrons attract protons
      3. Protons attract electrons
      4. Electrons attract electrons

      Which of the following is true?

      ChemistryGrade-9
      1. Electrons attract neutrons
      2. Neutrons attract protons
      3. Protons attract electrons
      4. Electrons attract electrons
      Grade-9
      Chemistry

      Metals are found  ______________ of the periodic table.

      1. In the middle
      2. To the left
      3. To the right
      4. At the end

      Metals are found  ______________ of the periodic table.

      ChemistryGrade-9
      1. In the middle
      2. To the left
      3. To the right
      4. At the end
      Grade-9
      Chemistry

      __________ refers to the way a metal can be hammered or rolled into thin sheets.

      1. Luster
      2. Malleable
      3. Metalloids
      4. Solid

      __________ refers to the way a metal can be hammered or rolled into thin sheets.

      ChemistryGrade-9
      1. Luster
      2. Malleable
      3. Metalloids
      4. Solid
      parallel
      Grade-9
      Chemistry

      Which elements are found on the right side of The Periodic Table?

      1. Metals
      2. Non-metals
      3. Metalloids
      4. Water

      Which elements are found on the right side of The Periodic Table?

      ChemistryGrade-9
      1. Metals
      2. Non-metals
      3. Metalloids
      4. Water
      Grade-9
      Chemistry

      What happens to the number of shells as you move down a group?

      1. They decrease by 1
      2. They increase by 1
      3. They increase by 2
      4. Nothing

      What happens to the number of shells as you move down a group?

      ChemistryGrade-9
      1. They decrease by 1
      2. They increase by 1
      3. They increase by 2
      4. Nothing
      Grade-9
      Chemistry

      Who designed the framework of the periodic table?

      1. Mendeleev
      2. Bohr
      3. Lewis
      4. Democritus

      Who designed the framework of the periodic table?

      ChemistryGrade-9
      1. Mendeleev
      2. Bohr
      3. Lewis
      4. Democritus
      parallel
      Grade-9
      Chemistry

      The way a metal’s surface reflects light is called ____________.

      1. Dull
      2. Luster
      3. Malleable
      4. Non-sonorous

      The way a metal’s surface reflects light is called ____________.

      ChemistryGrade-9
      1. Dull
      2. Luster
      3. Malleable
      4. Non-sonorous
      Grade-9
      Chemistry

      ___________ refers to the way most metals can be stretched into wires.

      1. Luster
      2. Ductile
      3. Malleable
      4. Sonorous

      ___________ refers to the way most metals can be stretched into wires.

      ChemistryGrade-9
      1. Luster
      2. Ductile
      3. Malleable
      4. Sonorous
      Grade-9
      Chemistry

      Pick the odd one out:

      1. Malleable
      2. Ductile
      3. Sonorous
      4. Non-lustrous

      Pick the odd one out:

      ChemistryGrade-9
      1. Malleable
      2. Ductile
      3. Sonorous
      4. Non-lustrous