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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
Elements X, Y, and Z have atomic numbers 6, 9 and 12 respectively. Which one forms an anion?
Give electron dot diagram of the following:
methane
Fill in the blank.
___________ single covalent bonds are formed between the carbon and chlorine atoms.
Elements X, Y, and Z have atomic numbers 6, 9 and 12 respectively. Which one forms a cation?
Choose the correct option
Which of the following is the correct electronic configuration of potassium?
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.
Number of valence electrons in carbon is ______.
Elements with stable electronic configurations have eight electrons in their valence shell. They are ______.
How many atoms of each kind are present in the following molecule:
carbon tetrachloride
Elements A, B and C have atomic number 17, 19 and 10 respectively.
State which one is chemically inert.
