d. li and f
fluorine is the most electronegative element of all (electronegativity refers to the measure of an atom to attract electrons). we can take note that valence of those elements, i.e. li and f, li having 1 valence electron and fluorine has 7 valence electrons.
when li transfers an electron to f, it will become li+, and fluorine will be come f-, this reaction is the ionic bonding, the elements do bonding to achieve a noble gas configuration (that is 8 electrons on its shell)
ne is not reactive to any of it due to the fact that ne is a noble gas.
li has lower electronegativity than si, so li would be more attracted to another element with a high electronegativity.
it is the gravitational force that is responsible for us to be kept in orbit.
fungus and a lot mor
if continental convergent boundaries move towards each other and eventually bump, they produce an upward movement of their plates and give rise to new crust surfacing either above or shallowly below sea level.