Question

i.

An acid whose formula is H2CO3 –

ii.

An imaginary path in which electrons revolve around the nucleus –

iii.

In the Modern Periodic Table ,the Horizontal Rows are called –

iv.

Name one Negative catalyst -

v.

Two non-metals which react explosively , when brought in close contact –

vi.

The silvery residue obtained on heating mercury(II)oxidevii.

A compound formed when iron [Fe3+] combines with oxygen[O2-] –

viii.

A non-metal which forms a polyatomic molecule –

ix.

The radical containing one atom of carbon and three atoms of oxygen –

x.

The basic unit of matter not capable of independent existence –​

Answer 1

Explanation:

2.carbonic acid

3.

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Answer 2

Answer:

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