NH_(3)can be liquefied at ordinary temperature without the application of pressure. But O_(2)cannot, because

NH_(3)can be liquefied at ordinary temperature without the application

1.	NH_(3)can be liquefied at ordinary temperature without the application of pressure. But O_(2)cannot, because
Answer» its critical TEMP. is very HIGH its critical temp. Is low its critical temp. is moderate its critical tempereture is higher than that of ammonia. ANSWER :B