Asked by Chrissy Sarran on May 09, 2024
Verified
A column of elements missed by Mendeleev is:
A) the halogens.
B) the noble gases.
C) the alkali metals.
D) the alkaline earth metals.
Missed Column
A scenario in data presentation or analysis where one or more columns of data are accidentally omitted or lost, potentially leading to incomplete interpretations or results.
Noble Gases
A group of inert gases that have a complete valence electron shell, making them highly stable and unreactive under normal conditions.
Mendeleev
A Russian chemist who created the periodic table, organizing chemical elements by their atomic mass and chemical properties.
- Identify the groups of elements that were missed or later added to the periodic table.
Verified Answer
JH
Jackson HallmanMay 15, 2024
Final Answer :
B
Explanation :
Mendeleev's original periodic table, formulated in 1869, did not include the noble gases because they were not discovered until later. The first noble gas, argon, was discovered in 1894, after Mendeleev's periodic table was published.
Learning Objectives
- Identify the groups of elements that were missed or later added to the periodic table.