decalescent energy-absorbing endothermal heat-absorbing endoergic.
Hope this helps!
Answer:
option B is the correct answer
helium, beryllium, magnesium, calcium, strontium, barium, radium. i believe any of these are proper answers.
This is Arabic i think you chose chemistry so I think you have the wrong page.
Write it in English if its a question :)
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