Q17 of 56 Page 83

Which of the following statements is true about an atom?

Atoms are not able to exist independently. They may or may not exist independently. Among all the given options, option A is correct.

The chemical symbol for sodium is:

Which of the following correctly represents 360 g of water?

i. 2 moles of H₂O

ii. 20 moles of water

iii. 6.022 x 10²³ molecules of water

iv. 1.2044 x 10²⁵ molecules of water

One mole of H₂O means:

i. 18 g of H₂O

ii. 6.022 x 10²³ molecules of H₂O

iii. 180 g of H₂O

iv. 1.8 of H₂O

A molecule can be defined as the: