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प्रश्न
Name the following:
An element having valency 'zero'
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उत्तर १
Helium
उत्तर २
Element He, Ne, Ar i.e. Noble gases have ‘zero’ valency.
संबंधित प्रश्न
How do atoms attain noble gas configuration?
What type of bond is formed between two atoms, when the electronegative difference between them is low ?
State the following is a reduction reaction or oxidation reaction.
\[\ce{A^3+ + e- -> A^2+}\]
Give reason
`""_17^35"CI"` and `""_17^37"CI"` do not differ in their chemical reactions.
Explain
Octet rule for the formation of sodium chloride
Potassium (at No.19) and chlorine (at No.17) react to form a compound. Explain the formation of the compound on the basis of oxidation.
Identify the following reaction as either oxidation or reduction:
O + 2e- → O2-
Identify the following reaction as either oxidation or reduction:
K - e- → K+
Draw the geometric atomic structure of the three isotopes of hydrogen and the two isotopes of chlorine.
Draw the geometric atomic structure of the following atom showing the number of electrons, protons and neutrons in them:
\[\ce{^39_19K}\]
