How many dots are shown in the electron dot diagram for calcium, element number 20?

Given the formulas for the ionic compounds, draw the correct ratio of cations to anions (a) BaSO4, (b) CaF2, (c) Mg3N2, (d) K2O.

Which is the best explanation for what keeps a balloon inflated Select one: a. gas particles colliding with the inside of the balloon b. gas particles being attracted to each other c. gas particles colliding with each other d.

Where is pollen produced

The element whose atomic number is 13 has how many valence electrons electron configuration

Antoine Lavoisier, the French scientist credited with first stating the law of conservation of matter, heated a mixture of tin and air in a sealed flask to produce tin oxide.

Sarah is ordering cheese pizza for a party of ten people she knows each pizza has 8 slices to figure out how many pizzas to order sarah needs to know the

How many grams of sodium ions are in na2so4?

Electron configuration for iron?

Explain how melting is considered endothermic

In the process of covalent bonding, atoms share electrons. This means that * a) Electrons from each atom are attracted to the nucleus of both atoms b) Protons and neutrons attract c) Atoms lose electrons and become ions d) Atoms gain electrons and