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प्रश्न
Elements with stable electronic configurations have eight electrons in their valence shell. They are ______.
विकल्प
halogens
metals
noble gases
non metals
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उत्तर
Elements with stable electronic configurations have eight electrons in their valence shell. They are noble gases
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संबंधित प्रश्न
Give electron dot diagram of the following:
nitrogen
The following table shows the electronic configuration of the elements W, X, Y, Z:
|
Element |
W |
X |
Y |
Z |
|
Electronic |
2, 8, 1 |
2, 8, 7 |
2, 5 |
1 |
Answer the following question based on the table above:
What is the formula of the compound formed between W and X.
How many atoms of each kind are present in the following molecules: calcium oxide, chlorine, water, carbon tetrachloride?
How many electrons are required by each atom mentioned in (a) to attain the nearest noble gas configuration?
How many electrons are required or released by each atom in calcium oxide to attain the nearest noble gas configuration?
Define the term:
orbit
Name the following:
The shell closest to the nucleus of an atom
Give a reason
Physical properties of isotopes are different.
Identify the following reaction as either oxidation or reduction:
Fe3+ + e- → Fe2+
Explain Octet rule with an example.
Elements A, B and C have atomic number 17, 19 and 10 respectively.
State which one is a metal.
