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The statement "The properties of elements are a periodic function of their atomic weights" on periodic table was given by

The statement "The properties of elements are a periodic function of their atomic weights" on periodic table was given by Correct Answer Dmitri Mendeleev

The correct answer is Dmitri Mendeleev.

Key Points

  • The Modern Periodic Law was given by Dmitri Mendeleev.
  • Dmitri Mendeleev stated that "The properties of elements are a periodic function of their atomic masses".
  • The Modern Periodic Law was modified by Henry Moseley.
  • Henry Moseley showed that the atomic number is a more fundamental property of an element than its atomic mass.
  • So, the Modern Periodic Law can be stated that "The physical and chemical properties of the elements are periodic functions of their atomic number".
  • Features of Modern Periodic Table:
    • There are eighteen vertical columns known as groups in the modern periodic table which are arranged from left to right and seven horizontal rows which are known as periods.
    • The elements of group 1, 2, 13, 14, 15, 16, and 17 are known as the main group elements or normal elements.
    • The elements of groups 3, 4, 5, 6, 7, 8, 9, 11, and 12 are known as the transition elements.
    • Group 18 is called noble gases or inert gases.

Additional Information

  • Johann Dobereiner was the first to consider the idea of trends among properties of elements.
  • In 1829, he noted a similarity among the physical and chemical properties of several groups of three elements (Triads).
  • These Triads were called as Dobereiner Triads.
  • John Alexander Newland profounded the Law of Octaves in 1865.
  • According to Newland's Law of Octaves when elements are arranged in the order of increasing atomic masses, the properties of the eighth element are a repetition of the properties of the first element.
  • John Dalton is known for introducing the Atomic Theory in chemistry in the year 1808.
  • Dalton’s atomic theory proposed that all matter was composed of atoms, indivisible and indestructible building blocks. While all atoms of an element were identical, different elements had atoms of differing size and mass.

Related Questions

Which of the following statement(s) is/are false regarding the modern periodic table? i. In the modern periodic table, the elements are arranged in decreasing order of their atomic numbers. ii. In the modern periodic table, the elements are arranged in increasing order of their atomic masses. iii. In the modern periodic table, isotopes are placed in adjacent groups. iv. In the modern periodic table, the elements are arranged in increasing order of their atomic numbers.
Which of the following statements is/are false regarding modern periodic table?
1. Elements in the modern periodic table are arranged in decreasing order of their atomic numbers.
2. Elements in the modern periodic table are arranged in increasing order of their atomic masses.
3. In the modern periodic table, isotopes are placed in adjacent groups.
4. Elements in modern periodic table are arranged in increasing order of their atomic numbers.
When the elements are arranged in increasing order of atomic weights, the atomic weight of the middle element is approximately the average of the atomic weights of the other two elements' - this rule is known as-
Consider the following statements regarding the Mendeleev periodic table. Identify the correct ones. Elements were arranged in increasing order of atomic weights in horizontal rows called 'groups' and vertical columns called ''periods'. Elements in the same group had the same 'valency' and similar chemical properties.
Consider the following two C code segment. Y and X are one- and two-dimensional arrays of size n and n × n respectively, where 2 ≤ n ≤ 10. Assume that in both code segments, elements of y are initialized to 0 and each element X[i] [j] of array X is initialized to i + j. Further assume that when stored in main memory all elements of x are in same main memory page frame. Code segment 1:                 //initialize elements of y to 0                 //initialize elements X[i] [j] of X to i+j                       for (i = 0; i < n; i++)                                 Y[i] += X[0] [i]; Code Segment 2:                 //initialize elements of Y to 0                 //initialize elements X[i] [j] of X to i+j                        for (i = 0; i < n; i++)                                 Y[i] += X[i] [0]; Which of the following statements is/are correct? S1: Final contents of array Y will be same in both code segments S2: Elements of array X accessed inside the for loop shown in code segment 1 are contiguous in main memory S3: Elements of array X accessed inside the for loop shown in code segment 2 are contiguous in main memory
Which of the following statement(s) is/are true? In the Modem Periodic Table, the arrangement of elements is based on their: Statement 1:increasing atomic number in the horizontal rows. Statement 2:increasing atomic number in the vertical columns.
Which of the following statements are true regarding the trends in the modern periodic table? i. Atomic radius increases on going right in the periodic table. ii. Ionization energy increases as we go right in the periodic table. iii. Electron affinity increases as we go down in the group.
Consider the following statements with reference to the periodic table of chemical elements.
1. Ionization potential gradually decreases along a period.
2. In a group of elements, electron affinity decreases as the atomic weight increases.
3. In a given period, electronegativity decreases as the atomic number increases.
Which of these statement(s) is/are correct?
Who designed the modern periodic table, according to which "the physical and chemical properties of elements are the periodic functions of their atomic numbers".
The sum of the weights of P and Q is more than that of R and S taken together. The weight of P is half as much as the sum of the weights of Q and S. The some of the weights of P and R is the same as the weights of Q and S taken together. Which of the following statements must be incorrect?