pentru elementele 2=7;13;24;35;58;70;82- determinati configuratia electronica si pozitia sistemul periodic pentru primele 4 precizatii ce tip de ioni pot forma

Which is a chemical property of iron? a. it forms iron oxide (rust) when exposed to moisture and air. b. it is a gray–black metal that is hard to the touch. c. it has a melting point of 2795°f (1536°c). d. it is a good conductor of heat

Stage in which a typical star has completely stopped fusion

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