Question

help me with it guyz​

Answer 1

The radius of the sun is a really big number which will hence be written with respect to km

Hence the radius of the sun is 6.9×10⁵km = 690000km

The radius of the hydrogen atom is a really small number hence it is written with respect to nanometre (nm) or angstrom (A°) or picometre (pm)

Hence the radius of hydrogen atom is 5×10⁻² nm or  5×10⁻¹ A° or 50 pm

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