Question

Your teacher uses me, i am a metallic element found in chalk, limestone, marble, etc. Who am i?

Answer 1

HI THERE!!!!!!!!!!
I AM UR
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CALCIUM

Answer 2

the metallic element found in chalk, limestone, marble etc. is Calcium atomic number -20 i.e. element in the Periodic table. It's symbol is Ca.

It is also the fourth element in the Reactivity Series of Metals.