Chlorine, bromine and iodine belong to the same group and?
A. are gaseous at room temperature. B. form white precipitate with AgNO3(aq) C. react violently with hydrogen without heating D. react with alkali Correct Answer: Option D D. react with alkaliWhich of the following arrangements is in order of increasing metallic property?
A. Li < Na< k B. Na < Li < K C. K D. K < Li < Na Correct Answer: Option A B. Na < Li < KThe energy change that accompanies the addition of an electron to an isolated gaseous atom is?
A. bond energy B. electronegativity C. electron affinity D. ionization energy Correct Answer: Option C C. electron affinityWhich of the following hydrohalic acids is the weakest?
A. HBr B. HCI C. HF D. HI Correct Answer: Option D D. HIProducts
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