1. If the element is in s block, then the group number is equal to the number of valence electrons. Example: Mg(12) - 2,8,2 Group = No. of valence electrons = 2 2. If the element is in the p block, then the number of the group can be determined by the formula...
Atomic mass:The standard atomic weight of an element is the average mass of the element written in atomic mass units (amu). Even though each atom has roughly a whole number of atomic mass units, you will notice that the atomic mass on the periodic table is a decimal; that's because the...
Identify different parts of the periodic table and explain how the position of an element in the periodic table is linked to its chemical properties and atomic structure. How did Millikan determine the charge of an electron? Why do non-bonded electrons help determine the shapes of molecules? ...
However, for example, silver can form an ion with +1 charge, whereas zinc and cadmium can gain a +2 charge. To find out whether an atom in these groups form ions more generally and determine their charges, the best thing to do is directly look up the element you're interested in. R...
Navigate to the periodic table of the chemical elements (see Resources) and find out the integer atomic number for each element identified in Step 1—the number that appears just above the chemical symbol for each element. In our example, the atomic numbers of the elements potassium (K), nit...
Which element has the greatest density at standard temperature and pressure? Osmium is the densest element on the periodic table that occurs naturally, with a density of 22,590 kg/m3. It is combined with other metals to make the tips of fountain pen nibs, electrical contacts, and in other ...
How does electronegativity change from left to right across a period, or row, in the periodic table? Briefly explain the trend of element's electronegativity across the periodic table. a. Explain the electronegativity trends across a row and down a column of the pe...
1. The oxidation number of an element in its free state is zero. Example: The oxidation number of Zn, Al, H2, O2, and Cl2 is zero 2. The oxidation number of a monatomic ion is the same as the charge on the ion. Example: The oxidation number of Na+ is +1, Mg2+ is +2, Al...
MALE STUDENT: So is my version of the periodic table wrong?Should element 43 really be called masurium? MALE PROFESSOR: Maybe. But you know it's hard to tell for sure after all this time if Ida Tacke's group did discover element 43.They didn’t um publish enough detail on their method...
of the element. The charge of an element is equal to the number of protons minus the number of electrons. The number of protons is equal to the atomic number of the element given in the periodic table. The number of electrons is equal to the atomic number minus the charge of the atom...