Question

Which of the following is an element ?
(1) Oxygen gas
(ii) Carbon dioxide gas
(iii) Sulphur dioxide gas
(iv) Nitrogen dioxide gas​

Answer 1

Answer:

oxygen gass

Step-by-step explanation:

hope it helps u

Answer 2

Answer:

Oxygwn gas is an element

Carbon dioxide,Sulphur dioxide and Nitrogen dioxide are mixture of two gases.