Quiz:Which example is used as evidence that the universe began with the Big Bang ? A left over energy
B craters on the moon
D the existence of atoms
Or
C the force of gravity

Please awnser?

A. leftover energy in the universe from the event

Explanation: Because it began with a huge bang, as a force.

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.