A certain element is a metalloid that forms an acidic oxide with the formula R_(2)O_(5). Identify the elements

A certain element is a metalloid that forms an acidic oxide with the f

1.	A certain element is a metalloid that forms an acidic oxide with the formula R_(2)O_(5). Identify the elements
Answer» <html><body><p></p>Solution :Since the elements forms as axide with formula, `R_(2)O_(<a href="https://interviewquestions.tuteehub.com/tag/5-319454" style="font-weight:bold;" target="_blank" title="Click to know more about 5">5</a>)`, it must be an element of <a href="https://interviewquestions.tuteehub.com/tag/group-1013370" style="font-weight:bold;" target="_blank" title="Click to know more about GROUP">GROUP</a> 15. Now group 1 has <a href="https://interviewquestions.tuteehub.com/tag/two-714195" style="font-weight:bold;" target="_blank" title="Click to know more about TWO">TWO</a> metalloids, As and Sb. Since the acidic character of pentoxides of group 15 elements decrease while the basic character increases down the group, therefore, `As_(2)O_(5)` is acidic while `Sb_(2)O_(5)` is amphoteric. <a href="https://interviewquestions.tuteehub.com/tag/thus-2307358" style="font-weight:bold;" target="_blank" title="Click to know more about THUS">THUS</a>, the metalloid of group 15 elements which forms an acidic pentoxide `(As_(2)O_(5))` is As.</body></html>