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Which element can appear in any section of an HTML page?
a)
b)
c)
d)

1 Answer

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Final answer:

The question involves identifying characteristics and classifications of elements on the periodic table, including their group, period, and electron configuration based on their position on the table.

Step-by-step explanation:

The question relates to the classification of elements on the periodic table, their electron configurations, and specific characteristics determined by their position and group on the periodic table. The elements that can be classified based on the given criteria are:

  • Potassium (K) belongs to Group 1 (alkali metal).
  • Bromine (Br) is a halogen.
  • Neon (Ne) is a noble gas.
  • Strontium (Sr) is an alkaline earth metal in the same period as selenium.
  • Iodine (I) is the halogen in the same period as lithium.
  • Tellurium (Te) is the chalcogen in the same period as cadmium.

Atoms that have varying numbers of neutrons in their nuclei are called isotopes. The electron configuration of an element can be predicted from its position on the periodic table, such as for Germanium (Ge) and Carbon (C). Elements are also classified as metals, nonmetals, transition metals, or inner transition metals based on their general properties and their position on the periodic table, as seen with Lithium (Li), Argon (Ar), Americium (Am), and Iron (Fe).

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