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प्रश्न
Choose the most appropriate answer from the following list of oxides which fit the description.
An amphoteric oxide.
विकल्प
SO2
SiO2
Al2O3
MgO
CO
Na2O
उत्तर
Al2O3
Explanation:
Shows both acidic and basic properties.
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संबंधित प्रश्न
Which one of the following does not increase while moving down the group of the periodic table?
Complete the following sentences
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How can the valency of an element be determined if its electronic configuration is known?
What is the common feature of electronic configurations of the elements at the end of period 2 and period 3?
In the above table, H does not represent hydrogen.Some elements are given in their own symbol and position in the periodic table while others are shown with a letter. With refrence to the table answer the following questions.
1. Identify the most electronegative element.
2. Identify the most reactive element of Group I.
3. Identify the element from Period 3 with least atomic size.
4. How many valence electrons are present in Q?
5. Which element from group 2 would have the least ionisation energy?
6. Identify the noble gas of the fourth period.
7. In the compound between A and H, what type of bond would be formed and give its molecular formula.
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Based on the group valency of element write the molecular formula of the following compound giving justification:
Halide of the elements of group thirteen
Supply the missing word from those in bracket:
If an element has one electron in its outermost energy level [shell] then it is likely to be _______.
Match the option A and B with the statements (i) and (ii):
| A. metal | (i) The metal that forms two types of ion. |
| B. iron | (ii) An element with electronic configuration 2, 8, 8, 3. |
