Question

An element reacts with oxygen to form acompound which is basic in nature. Theelement is likely to be _i) Calciumi) Carbon iii) hydrogen iv) Nitrogen. Explainwith reason​

Answer 1

Answer: A option is correct..

Explanation:

The compound with a high melting point is ionic in nature so the element belongs to group I and II which form ionic compounds. This can be CaO.

The element calcium combines with water to form calcium hydroxide while the other three elements do not dissolve in water.

So, the correct option is A

Answer 2

Explanation:

Given -

An element reacts with oxygen to form a compound which is basic in nature.

To Find -

The element is likely to be ?

As we know that :-

Metal forms basic oxide

And

Non-metal forms acidic oxide

Now,

It is cleared that the element is likely to be metal because here the nature of oxide formed is basic.

And

In the above options Ca is metal.

So,

Ca reacts with oxygen to form a compound which is basic in nature.

Chemical equation :-

• 2Ca + O2 -> 2CaO