What is the oxidation number of a pure element?

If the density of iron is 7.8 g/cm3 and you find an iron nail weighing 15g, What iwould the volume of the nail be?

Reactions between atoms occur when: an atom seeks to fill its outer shell of electrons an atom seeks to balance its positive and negative charges the reaction will result in paired electrons

Why does a higher temperature cause a reaction to go faster?

An ionic bond is the attraction between a. similarly charged ions. b. oppositely charged ions. c. neutral ions. d. neutral atoms. An ionic bond is the attraction between oppositely charged ions.

What is the sea of instability

Calculate the volume of a 0.323-mol sample of a gas at 265 K and 0.900 atm.

What is the molar mass of the following substance : Cs2CO3

What does the velocity of a wave describe

Sulfur (S) has 16 protons and 16 neutrons. How many electron shells does an element of sulfur have?

Which one of the following statements about orbital energies is incorrect? A) The energy of a given orbital increases as the nuclear charge Z increases. B) In many-electron atoms the energy of an orbital depends on both n and l.