Chemistry Class 11 NCERT Solutions: Chapter 2 Structure of Atom Part 11

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Q: 35. If the diameter of a carbon atom is 0.15 nm, calculate the number of carbon atoms, which can be placed side by side in a straight line across length of scale of length 20 cm long.

Image of Carbon Atom for Structure in Atom

Image of Carbon Atom

Image of Carbon Atom for Structure in Atom

Answer:

Length of the scale

Diameter of a carbon atom =0.15 nm

One carbon atom occupies

Q: 36. atoms of carbon are arranged side by side. Calculate the radius of carbon atom if the length of this arrangement is 2.4 cm.

Answer:

Length of the given arrangement = 2.4 cm

Number of carbon atoms present =

Q: 37 The diameter of zinc atom is . Calculate (a) radius of zinc atom in pm and (b) number of atoms present in a length of if the zinc atoms are arranged side by side lengthwise.

Image of Zinc's for Structure in Atom

Image of Zinc's

Image of Zinc's for Structure in Atom

Answer:

(a) Radius of zinc atom

(b) Length of the arrangement

Diameter of zinc atom

Q: 38 A certain particle carries of static electric charge. Calculate the number of electrons present in it.

Image of Electrons for Structure in Atom

Image of Electrons

Image of Electrons for Structure in Atom

Answer:

Charge on one electron

Charge is carried by electron.