Cho 8.9g hỗn hợp kim loại magie và kẽm tác dụng hoàn toàn 200ml dung dịch Axitsunfuric nồng độ 1M thu được 4.48 lít Hidro (đktc) và hỗn hợp hai muối. Tính khối lượng hỗn hợp muối thu được

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explanation:

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b. examine and describe cells

the seeing the electronic configuration we can say that the element is fluorine.

fluorine is the most electronegative element in the periodic table.

but by only seeing the configuration we cannot say about its reactivity because we don't know if its configuration after excitation or by addition of electrons.

but if not then, it is the lightest halogen and exists as a highly toxic pale yellow diatomic gas at standard conditions. as the most electronegative element, it is extremely reactive: almost all other elements, including some noble gases, form compounds with fluorine.