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प्रश्न
Elements A, B and C have atomic number 17, 19 and 10 respectively.
State which one is a metal.
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उत्तर
Electronic configuration of element A = (2, 8, 8, 1) at atomic no. 19
∴ Element B having 1 electron in outermost orbit is a Metal.
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संबंधित प्रश्न
(i) How many atoms of each kind are present in the following molecules: calcium oxide, chlorine, water, carbon tetrachloride?
(ii) How many electrons are required for their octet structure?
State differences between the properties of ionic compounds and covalent compounds.
What type of bond is formed between two atoms, when the electronegative difference between them is High ?
What type of bond is formed between two atoms, when the electronegative difference between them is zero?
State the following is a reduction reaction or oxidation reaction.
\[\ce{Cu -> Cu^2+}\]
Explain fractional atomic mass. What is the fractional mass of chlorine?
Give reason
Argon does not react.
Potassium (at No.19) and chlorine (at No.17) react to form a compound. Explain the formation of the compound on the basis of oxidizing agent.
Give the orbital diagram of the following:
Hydrogen chloride
Identify the following reaction as either oxidation or reduction:
K - e- → K+
