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ps chpt 18 &19
atoms, chemical formula, naming compounds,
Arsenic has how many protons | 33 |
Iodine has how many protons | 53 |
How many electrons does aluminum have | 13 |
How many electrons does silver have | 47 |
Copper has a mass of 63, atomic number 29, how many neutrons | 34 |
Bromine has a mass of 80, atomic number of 35, how many neutrons | 45 |
What element would have similar properties to those of neon: aluminum, argon, arsenic, silver | argon |
halogens are those elements in group | 7 |
Beryllium has an oxidation number of | 2+ |
Sulfur has an oxidation number of | 2- |
Electron configuration for silicon | 1s2 2s2 2p6 3s2 3p2 |
Electron configuration for ion mg2+ | 1s2 2s2 2p6 |
Write the chemical formula for aluminum and sulfur | Al2S3 |
Write the chemical formula for magnesium and fluorine | MgF2 |
Write the chemical formula for sodium and oxygen | Na2O |
Write the chemical formula for hydrogen and sulfate | H2SO4 |
Write the chemical formula for calcium and nitrate | Ca(NO3)2 |
Name the following ionic compound NaI | sodium iodide |
Name the following K2(SO4) | Potassium sulfate |
Name the following covalent compound PCl5 | Phosphorus pentachloride |
name the following covalent compound SF6 | Sulfur hexafluoride |
Calculate the formula mass of calcium carbonate | 100.09 amu |
What subatomic particles are found in the nucleus? | Protons and nuetrons |
Where are electrons located | energy levels outside the nucleus |
Which electrons are lost or gained during bonding | Valence |
Calculate the formula mass of magnesium sulfate. MgSO4 | 120.38 |
Elements in group 5 have how many valence electrons | 5 |
The compound MgO contains which ions? | Mg 2+ and O 2- |
Avogadro's number is | 6.02 x 10 ^23 |
If atom A has 5 protons, 4 nuetrons, and 2 electrons; atom B has 4 protons, 4 neutrons, and 2 electrons are they the same element? | No number of protons are different |
A bond between atoms in which electrons are shared | covalent bonds |
A bond between atoms in which electrons are lost or gained | ionic bond |
The attraction an atom has for a shared pair of electrons in a covalent bond | electronegativity |
Why are noble gases considered stable? | they have a full outer electron shell |
Why do atoms bond? | To become more stable |