FINISH THESE QUESTIONS ILL GIVE YOU Write the symbol and name
for the cation formed when Symbol Name

(Example) A calcium atom loses two electrons Ca2+ calcium

A potassium atom loses one electron K+ Potassium ion

A zinc atom loses two electrons Zn2+ Zinc ion
A barium atom loses two electrons

Write the symbol and name for the anion formed when

(Example) A oxygen atom gains two electrons O2- oxide

A fluorine atom gains one electron

A sulfur atom gains two electrons
A nitrogen atom gains three electrons

The two naturally occurring isotopes of chlorine are 35cl (34.969 amu, 75.77%) and 37cl (36.966 amu, 24.23%). the two naturally occurring isotopes of bromine are 79br (78.918 rm amu, 50.69%) and 81br (80.916 amu, 49.31%). chlorine and bromine combine to form bromine monochloride, brcl. 1. how many peaks will be present in a mass spectrum for brcl? the four combinations of molecule possible given these four isotopes are: 81br37cl, 81br35cl, 79br37cl, and 79br35cl. 2. what are the masses of the four different brcl molecules? express the masses using six significant figures, in decreasing numeric order (highest to lowest), separated by commas.

Which of the following is a conclusion that resulted from ernest rutherford’s scattering experiment? (will mark brainliest) a. the nucleus is negatively charged b. the atom is a dense solid and is indivisible c. the mass is conserved when atoms react chemically d. the nucleus is very small and the atom is mostly empty space

Sum of brother and sisters age is 26. four times the brothers age is subtracted from three times the sisters age, the difference is 8. what are the ages of the brother and sister?