WILL MARK BRAINLIEST

A scientist performs tests on a sample of an element. The element is a shiny solid that conducts electricity and heat. The scientist is able to bend and flatten the sample when pressure is applied to it.
Based on this information, the element could NOT be a member of which group on the periodic table?
A) Group 2
B) Group 8
C) Group 12
D) Group 18

D)Group 18

Explanation:

Elements in group 18 doesn't't possess any of the properties above

answer: enthalpy

explanation:

for a exothermic reaction, the energy is released i.e. the energy of the products is lower than the energy of the reactants.

= enthaply

= energy of products

= energy of reactants

as , thus comes out to be negative. negative value of enthalpy shows that the reaction is exothermic.