O símbolo “Br12” pode ser encontrado na tabela periódica? Se sim, qual elemento?

During chemistry class, carl performed several lab tests on two white solids. the results of three tests are seen in the data table. based on this data, carl has concluded that substance b must have bonds.

Three alkali metals in group 1 are a. calcium, strontium, barium b. boron, aluminum, gallium c. sodium, potassium, rubidium d. fluorine, iodine, chlorine

The diagram below shows the different phase transitions that occur in matter. which arrow represents the transition in which dew is formed?