O) What is the cause for placing calcuim in 2 or
IIA group of the modern periodic table?
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because u need two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons in their nuclei to form isotopes.

so since they all have the same shape? i mean maybe because m& m and reeses are both chocolates

the dissolution of polymer can be thermodynamically described in 2 steps.

your answer is c) plasma

~*"auba14"*~