What is called a bond between a metal and a nonmetal

An empty fuel tank can still contain and therefore can be even more dangerous than one full of liquid fuel.

Which of the following units is not an official si unit? mole liter kilogram ampere

As we move from left to right across the periodic table, what is the general trend? a) atomic radii increase. b) electronegavitiy decreases. c) nuclear shielding increases. d) metallic character decreases.