The group 8a (18) elements the group 8a (18) elements melt at high temperatures are good conductors of electricity are unreactive and are rarely found in combination with other elements react vigorously with water are liquids at room temperature

unreactive and are rarely found in combination with other elements

Explanation:

The Group 8A (18) elements are nothing but noble gases. The noble gases in periodic table are Helium, Neon, Argon, krypton,Xenon, Radon. The gases are least reactive elements in the periodic table. The reason being their Octate is complete.

So, option C that is are unreactive and are rarely found in combination with other elements is the correct option. Rest all option are absurd about Group 8A (18) elements

question1

1,000 tons

question2

3: 8

question 3

store d

step-by-step explanation:

it doesn't. it was imagined up in the middle ages.