Correct Answer:
Option C - The most abundant metals are 8.1% of Aluminium, 5.0% of Iron and 3.6 of Calcium, followed closely by Na, K, Mg and Ti. In the earth crust, Oxygen percentage is 46.6 but Oxygen belongs to the non-metal group.
C. The most abundant metals are 8.1% of Aluminium, 5.0% of Iron and 3.6 of Calcium, followed closely by Na, K, Mg and Ti. In the earth crust, Oxygen percentage is 46.6 but Oxygen belongs to the non-metal group.