Acluster of billions of atoms that all have magnetic fields lined up in the same way is known as a
a. magnetic field line.
b. magnetic pole.
c. magnetic domain.
d. permanent magnet.
the region around a magnet where the magnetic force is exerted is known as its
a. magnetic pole.
b. lodestone.
c. magnetic field.
d. magnetic domain.

Which best describes why nh4+ can form an ionic bond with ci-?

1)each group 16 element has how many valence electrons? ( )4 ( )6 ( )8 ( )16 2)how many dots appear in the dot structure for calcium ion, ca2+? ( )zero ( )one ( )two ( )eight 3) which of the following atoms forms a cation to obtain an octet of outer shell electrons? ( )magnesium ( )oxygen ( )fluorine ( )helium 4) an al3+ ion contains 13 protons and 10 electrons. ( )true ( )false 5) valence and non-valence electrons are represented in lewis dot structures. ( )true ( )false

Calculate the mass of silver needed to react with chlorine to produce 126g if silver chloride?