which statements about earth’s core explain earth’s magnetic field? check all that apply.
earth’s core is composed of magnets.
the inner core is solid.
the outer core is solid.
the inner core is liquid and moving.
the outer core is liquid and moving.
earth’s core is composed of iron and nickel.

Explanation : The Earth's magnetic field is caused due to the spinning motion of the liquid metals iron and nickel present in the outer core. The inner core of earth is solid, gives a magnetic field to the earth. Also, the core of the earth consists of iron and nickel element in it, which imparts magnetism to the earth.

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.