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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.
संबंधित प्रश्न
Fill in the blank:
The modern periodic table consists of ……………. periods.
How many rows and columns are there in the modern periodic table?
where should hydrogen be placed in the modern periodic table? Give reason for your answer.
Name the type of elements which have two outermost shell incomplete.
State the modern periodic law for classification of elements. How many (i) groups and (ii) periods are there in the modern periodic table?
What is meant in the periodic table by a period?
Name the cation and the anion in the salt – calcium sulphate
The amount of energy released when one or more electrons is added to the neutral atom is ______
An element X which is a yellow solid at room temperature shows catenation and allotropy. X forms two oxides which are also formed during the thermal decomposition of ferrous sulphate crystals and are the major air pollutants.
- Identify the element X
- Write the electronic configuration of X
- Write the balanced chemical equation for the thermal decomposition of ferrous sulphate crystals?
- What would be the nature (acidic/ basic) of oxides formed?
- Locate the position of the element in the Modern Periodic Table.
The maximum number of electrons that can be accommodated in s, p,d, and f subshells are ______.
