Write the symbol for the ion... a. an oxygen atom that has gained two electrons:
ID: 529980 • Letter: W
Question
Write the symbol for the ion... a. an oxygen atom that has gained two electrons: _____ b. a magnesium ion that has lost two electrons: ______ c. a copper ion that has lost one electron: _______ d. a phosphorous atom that has gained three electrons: ______ e. a sodium atom that has lost one electron: _____ f. a chlorine atom that has gained one electron: ______ Write the symbol for the isotope... a. with 8 protons and 8 neutrons b. with 28 protons and 30 neutrons c. with 16 protons and 17 neutrons d. with 92 protons and 146 neutrons a. Here are the three isotopes of hydrogen. (remember that isotopes are atoms the same element but with different #'s of neutrons.) Write below each symbol how many neutrons that isotope has. H^1_1^2_1H H^3_1 b. Carbon has three isotopes. One has 6 neutrons, one has 7 neutrons, and one has 8. Draw their symbols below: Chlorine has two isotopes. CI-35 has an abundance of 75.77%, and Cl-37 has an abundance of 24.23%. Calculate the average atomic mass of chlorine.Explanation / Answer
2
a) O^2-
b) Mg^2+
c) Cu^+3
d) P^3-
e) Na^+1
f) Cl^-1
3 a) Oxygen - 16
b) nickel - 58
c) sulfur-33
d) uranium - 238
4 a) H-1 = 0 neutron
H-2 = 1 neutron
H- 3 2 neutron
5) 75.77 % of chlorine atom has mass of 35u
contribution of cl-35 = ( 75.77/100*35) = 26.5195 u
24.23% of chlorine atom has mass of 37u
contribution of cl-37 = ( 24.23/100*37) = 8.9651u
average atomic mass of chlorine = 26.5195u + 8.9651u = 35.4846u
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