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Mendeleev left gaps in his table to place elements not known at the time. By looking at the chemical properties and physical properties of the elements next to a gap, he could also predict the properties of these undiscovered elements. For example, Mendeleev predicted the existence of 'eka-silicon', which would fit into a gap next to silicon. The element germanium was discovered later. Its properties were found to be similar to the predicted ones and confirmed Mendeleev's Periodic Table.
What else can I help you with?
Which two elements on the periodic tabel would have been placed in different groups in moseleys periodic table but not in mendeleevs?
bi and po
Why is bacteria and archaea placed in separate kingdoms?
They are placed in separate Domains on basis of presence and absence of peptidoglycan .
In an experiment 90 newborn flies are divided evenly into three separate groups and placed in boxes inside an incubator that is maintained at a constant temperature of 30C. On a daily basis the fir?
tempertaure
Use of normal double barline and final double barline?
Bar lines are placed on the musical staff to separate the divisions of time. Time is divided in groups of pulses as defined in the time signature.
Where are there actnoides placed on the periodic table?
Actinoids are placed in a separate row under the periodic table.
What is sarcomastigophora?
Sarcomastigophora is a former taxonomic group that included protists with flagella or pseudopods, such as amoebas and trypanosomes. The classification has been revised, and these organisms are now placed into separate groups based on molecular and morphological characteristics.
All animals can be placed in one of two groups what are the two groups?
Vertebrates and invertebrates.
The groups in which carl linneaus placed organisms?
The answer is: taxa
Into which of the following groups is iron placed?
transition metals
What are the 2 groups of plants can be placed in?
monocots and dicots
What are the groups for numbers?
With a few exceptions metals are placed in groups 1-13 of the Periodic Table of Mendeleev.
Why has a colon been placed in a sentence?
It is either for a list or to separate two sentances
