Tellurium (Te) and iodine (I) would be in reverse order if the elements were placed in order of atomic mass instead of atomic number.
The atomic number of tellurium is 52.
Selenium has the largest atom among phosphorus, sulfur, and selenium because of its larger atomic radius. This is due to selenium having more electron shells and thus a greater distance from the nucleus.
They show that the periodic table isn't arranged on the basis of increasing atomic mass because iodine has a mass lesser than tellurium. Iodine has a mass of 126.90 and tellurium has a mass of 127.60.
The atomic mass of tellurium is approximately 127.6 atomic mass units.
Tellurium and Iodine
The atomic number of tellurium is 52.
Selenium has the largest atom among phosphorus, sulfur, and selenium because of its larger atomic radius. This is due to selenium having more electron shells and thus a greater distance from the nucleus.
Tellurium (Te) and iodine (I) would be in reverse order if the elements were placed in order of atomic mass instead of atomic number.
Mendeleev placed tellurium before iodine in his periodic table because tellurium's atomic weight is closer to the average of the elements preceding and following it than iodine. This allowed for a better fit in terms of chemical properties in the table.
They show that the periodic table isn't arranged on the basis of increasing atomic mass because iodine has a mass lesser than tellurium. Iodine has a mass of 126.90 and tellurium has a mass of 127.60.
The atomic mass of tellurium is approximately 127.6 atomic mass units.
The elements in Group 5A are nitrogen (N), phosphorus (P), arsenic (As), antimony (Sb), and bismuth (Bi). They are also known as the Nitrogen Group or Group 15 elements on the periodic table.
Among bromine, sulfur, chlorine, and selenium, chlorine has the smallest atomic radius. This is because atomic radius decreases as you move from left to right across a period on the periodic table. Chlorine is located on the right side of the periodic table in the 17th group, which indicates smaller atomic radius.
Elements in the oxygen family, also known as Group 16 or Chalcogens, have six valence electrons in their outermost shell. They are typically nonmetals and are highly reactive with other elements, especially with metals. They share similar chemical properties, such as forming oxides with oxygen having a -2 oxidation state.
The Atomic Mass usually increases, but there are a few exceptions, such as tellurium to iodine.
The elements in group 6A of the periodic table are oxygen, sulfur, selenium, tellurium, and polonium. They are known as the chalcogens and exhibit similar chemical properties due to their common valence electron configuration.