Question

Explain why Mendeleeve swapped the positions of iodine and tellurium in the periodic table

Can anyone help me?

Answer 1

Answer:

mendeleeves periodic table states that physical and chemical properties of elements are based on their atomic weight iodine is placed after the tellurium even the atomic mass of iodine is less than atomic mass of tellurium

atomic no. of I = 53

mass= 126.9

atomic number of Te = 5e

mass = 127.6

Answer 2

Mendeleev swapped the positions of two elements iodine and tellurium  based on their chemical properties

Explanation:

Mendel arranged the elements in the periodic table based on their physical and the chemical properties.

He arranged the elements based on the increasing order of atomic masses and divided the periodic table in eight groups and seven periods.

The iodine had lower atomic mass (126.9) than tellurium (127.6), so Iodine must had been placed before tellurium based on its physical property, but he placed iodine as 53rd element after tellurium 52nd element which then lined up with the fluorine, chlorine and bromine based on its chemical properties.

To learn more:

1) Fluorine, chlorine, bromine, iodine and astatine comprise which periodic table group:

https://brainly.in/question/8768912

2) Elements in the halogen family belonging to 17th group in the periodic table show similarity in their properties:

https://brainly.in/question/5588138