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प्रश्न
Name two elements that you would expect to show chemical reactions similar to calcium. What is the basis of your choice?
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उत्तर
Two elements, magnesium (Mg) and barium (Ba), undergo chemical reactions that are comparable to those of calcium because all three elements have two electrons in their outermost shell and are members of group II-A.
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संबंधित प्रश्न
Compare and contrast the arrangement of elements in Mendeleev’s periodic Table and the Modern Periodic Table.
How many periods and groups are there in the long form of periodic table?
Consider the following elements:
Na, Ca, Al, K, Mg, Li
Which of these elements belong to the same group of the periodic table?
On the basis of electronic configuration, how will you identify the first element of a period?
The electronic configuration of an element T is 2, 8, 8, 1.
What is the group number of T?
Give the symbol and valency of the following element and radical.
Hydroxide
State the number of elements in Period 1 of the Periodic Table.
Right or wrong sentence.
The modern periodic table has 1 to 7 periods.
- Write the electronic configuration of element X, given by its symbol as under: \[\ce{^40_20 X}\]
- Determine its position in the modem periodic table.
- What is the nature of its oxide?
- Name one other element of its group.
Explain giving reason why although the nuclear charge in atoms increases in moving from left to right in a period as well as in moving from top to bottom in a group in the Modern periodic table, but the size of the atoms does not vary similarly in both situations.
