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प्रश्न
Compare the radii of two species X and Y. Give reasons for your answer.
- X has 12 protons and 12 electrons
- Y has 12 protons and 10 electrons
उत्तर
In the two given options, species X and Y represents the same element magnesium. X is magnesium atom and Y is magnesium ion. Out of Mg and Mg2+ ion Mg atom would be larger as the number of energy shells in Magnesium atom is three while the number of energy shells in magnesium ion is two.
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संबंधित प्रश्न
Fill in the blank:
The modern periodic table consists of ……………. periods.
What is periodicity in properties of elements with reference to the Modern Periodic Table?
What is the main characteristic of the last elements in the periods of the periodic table? What is the general name of such elements?
What are horizontal rows and vertical columns in a periodic table known as?
Give the symbol and valency of the following element and radical.
Sulphate
State what the group number in the Modern Periodic Table signifies. Give a reason why elements in the same group, have similar valency and similar chemical properties.
Distinguish between:
s-block - p-block
______ and ______ are called inner transition elements.
How does the property vary in periods and in groups?
If an element X is placed in group 14, what will be the formula and the nature of bonding of its chloride?
