Identify the excess or deficiency of electrons in each atom relative to an atom of the closest noble gas. Then predict the formula of the compound formed when these elements interact: 1a.) sodium and chlorine ( to form sodium chloride)

1b.) calcium and oxygen (to form calcium oxide)

1c.) magnesium and chlorine (to form magnesium chloride)

1d.) aluminum and oxygen (to form aluminum oxide)

The diagrams show objects’ gravitational pull toward each other. which statement describes the relationship between diagram x and y? gravity attracts only larger objects toward one another. gravity attracts larger objects only if they are close to one another. if the masses of the objects increase, then the force between them also increases. if distance between the objects increases, then the amount of force also increases.

Which metal exist in liquid state and can be cut with knife ?

Helium decays to form lithium. which equation correctly describes this decay?