Which describes the heliocentric model of the solar system? (1 point) A. a model in which Earth is at the center of the solar system

B. a model in which Venus is at the center of the solar system

C. a model in which Mars is at the center of the solar system

D. a model in which the Sun is at the center of the solar system

answerspecific gravity;

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.