NEET UG CHEMISTRY MCQ: S-BLOCK ELEMENTS

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An element '

{P}

' has atomic number 56. What will be the formula of its halide?

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Correct option: B

P X_2

Option B (PX2) is correct because element P with atomic number 56 is Barium (Ba), which belongs to group 2 and forms a +2 ion, thus its halide will be BaX2.

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Which of the following exists in polymeric form? If 5 moles of

\mathrm{BaCl}_{2}

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\mathrm{Na}_{3} \mathrm{PO}_{4}

, the maximum number of moles of

\mathrm{Ba}_{3}\left(\mathrm{PO}_{4}\right)_{2}

formed is ________ (Nearest integer) Alkali metal superoxides are obtained by the reaction of Pearl ash and caustic potash are chemically: When sodium chloride solution is electrolysed, the gas that is liberated at the cathode is What is product of reaction :

\underset {\text{(dilute)}}{Ba(OH)_2}+H_2O_2+ClO_2 \longrightarrow