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प्रश्न
What name were given by Mendeleev to the then undiscovered element germanium?
उत्तर
Germanium (Ge) as eka-silicon.
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संबंधित प्रश्न
What was the Mendeleev's basis for the classification of elements?
Name two elements whose properties were predicted on the basis fo their positions in Mendeleev's periodic table.
Which group of elements could be placed in Mendeleev's periodic table later on, without disturbing the order? Give reason.
What name were given by Mendeleev to the then undiscovered element scandium.
According to Mendeleev's periodic law, the elements were arranged in the periodic table in the order of: ______
In Mendeleev's periodic table, gaps were left for the elements to be discovered later on. An element which found a vacant place in the periodic table later on is:
(a) Be
(b) Si
(c) Ge
(d) Se
An element X forms an oxide X2O3. In which group of Mendeleev's periodic table is this element placed?
(a) group II
(b) group III
(c) group V
(d) group VIII
The elements from the zero group are called _______.
Write the name.
The family of group 1 elements.
Write scientific reason.
In a group, the size of the atom increases as it goes down from the top.
