This table shows the mass of one atom for five chemical elements. Use it to answer the question given.
Element    Mass of atom (kg)
Titanium    7.95 × 10^-26
Lead          3.44 × 10^-25
Silver         1.79 × 10^-25
Lithium       1.15 × 10^-26
Hydrogen    1.674 × 10^-27
(a) Which is the heaviest element?
(b) Which element is lighter, Silver or Titanium?
(c) List all five elements in order from lightest to heaviest.

Solution:

Given, the table represents the elements and its mass of atoms in kg.

(a) We have to find the heaviest element.

From the table,

We observe that Lead is the heaviest element.

(b) We have to find the lighter element out of Silver and Titanium.

From the table,

Silver = 17.9 × 10^-26

Titanium = 7.95 × 10^-26

Silver > Titanium

Therefore, Titanium is the lighter element.

(c) We have to order all five elements from lightest to heaviest.

Hydrogen < Lithium < Titanium < Silver < Lead

✦ Try This: If 31860000000 can be expressed as 3.186 × 10^m, then find the value of m.

☛ Also Check: NCERT Solutions for Class 8 Maths Chapter 12

NCERT Exemplar Class 8 Maths Chapter 8 Problem 131

This table shows the mass of one atom for five chemical elements. Use it to answer the question given. (a) Which is the heaviest element, (b) Which element is lighter, Silver or Titanium, (c) List all five elements in order from lightest to heaviest

Summary:

(a) Lead is the heaviest element, (b) Silver is lighter than Titanium, (c) All five elements arranged from lightest to heaviest are mentioned above.

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