Which of the following statements is not true for halogens ?
(1) All form monobasic oxyacids.
(2) All are oxidizing agents.
(3) All but fluorine show positive oxidation states.
(4) Chlorine has the highest electron-gain enthalpy.
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Which of the following statements is not true about an atom? (a) Atoms are not able to exist independently
(a) Atoms are not able to exist independently
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Read the following statements about a constitution. Give reasons why each of these is true or not true.
(a) This is not a true statement since the authority of the rules of the Constitution is much more than that of any other law. (b) No, it is not correct...
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Read the following statements about a constitution. Give reasons why each of these is true or not true
(a) This is not a true statement since the authority of the rules of the Constitution is much more than that of any other law. (b) No, it is not correct...
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Following statements regarding the periodic trends of chemical reactivity of the alkali metals and the halogens are given.
(d) : All the alkali metals are highly reactive elements since they have a strong tendency to lose the single valence s-electron to form unipositive ions having inert gas configuration....
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Which of the following is not the characteristic of interhalogen compounds ? (a) They are more reactive than halogens
(d) Interhalogen compounds are not highly volatile
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Which of the following statements regarding properties of halogens are correct?
(b) Physical state of iodine is different from other halogens as iodine is solid, bromine is a liquid whereas fluorine and chlorine are gases
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Which of the following statements are correct? (i) Among halogens, radius ratio between iodine
(d) (i), (iii) and (iv)
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Why the strength of oxyacids formed by nonmetals increases from left to right?
An acid that contains oxygen is called oxoacid. Electronegativity of the central atom and the number of oxygen atoms determines the acidic strength of oxoacid. As the electronegativity increases, acidic strength also increases. As the...
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Which of the following statements is not true for halogens ? (1) All form monobasic oxyacids.
(3) All but fluorine show positive oxidation states. Due to high electronegativity and small size, F forms only one oxoacid, HOF known as Fluoric (I) acid. Oxidation number of F is...
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H3BO3 is :- (a)Monobasic and a weak Lewis acid (b)Monobasic and a weak Bronsted acid
(a)Monobasic and a weak Lewis acid
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