Electrons
How many valence electrons are in a stable atom of phosphate?
5
Name MgO
Magnesium oxide
What is the difference between molecular shape and electron geometry?
The arrangement of atoms in a molecule, usually relative to a single central atom, is known as molecular geometry. The arrangement of electron pairs around a central atom is known as electron geometry
What is Avogadro's number?
6.022*10^23
How many sig figs are in the number 20.230?
5
How many valence electrons are in a +1 atom of fluorine?
6
Name K3P
Potassium phosphide
What is the molecular shape of CH4?
Tetrahedral
How many moles of Carbon are found it 6.7*10^25 atoms?
110 moles C
Convert 7kg to mg
7*106
How many valence electrons are in a -3 atom of sulfur?
1
Name Mn2O3
Manganese III oxide
What is NF3 electron geometry?
Tetrahedral
How many atoms are in 5.63 moles of nitrogen?
3.39*10^24
What is the electron configuration for Selenium?
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p4.
How many valence electrons are in aluminum in the compound Al3Se2?
2
Name C2S4
Dicarbon tetrasulfide
What is SO2 electron geometry?
Triagonal planar
How many atoms are in 7.65 g of Na?
2.00*10^23
P has two isotopes. One has an atomic mass of 31.72 and a percent abundance of 58.62. The other has an atomic mass of 28.63 and a percent abundance of 41.38. What is the atomic mass of P?
30.44amu
How many valence electrons are in the compound MgSO4?
32
Name NH4OH
Ammonium hydroxide
What is CH2O molecular shape?
Triagonal planar
How many atoms of O there in 2.49 moles of S3C2(PO4)2?
1.20*10^25 atoms of O
If 2083 Joules are used to melt 5.26 grams of
aluminum, what is the heat of fusion for
aluminum?
396J/g