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# Fill in the blanks to complete the following table Symbolz #of protons.docx

Fill in the blanks to complete the following table Symbolz #of protonselectrons neutrons #of | Charge #of Fe 58 24 36 Sr2+ 16 2 16
Solution
Fe: Iron is the 26th element and its mass number is 58. Hence it has 26 protons and 32 neutrons. Since the given number of electrons is 2 less than the number of protons, the charge is +2.
Sr2+ : strontium is 38th element with mass 88. Hence the number of protons is 38. Since the charge is +2, the number of electrons is 36.
As- arsenic is 33rd element with mass number 75. Hence number of protons and electrons are 33 and neutrons = 75-33 = 42. The charge is neutral.
S- sulphur is the16th element with mass number 32. The number of neutrons and protons are 16. Since the charge is -2, number of electrons = 18.

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Fill in the blanks to complete the following table Symbolz #of protonselectrons neutrons #of | Charge #of Fe 58 24 36 Sr2+ 16 2 16
Solution
Fe: Iron is the 26th element and its mass number is 58. Hence it has 26 protons and 32 neutrons. Since the given number of electrons is 2 less than the number of protons, the charge is +2.
Sr2+ : strontium is 38th element with mass 88. Hence the number of protons is 38. Since the charge is +2, the number of electrons is 36.
As- arsenic is 33rd element with mass number 75. Hence number of protons and electrons are 33 and neutrons = 75-33 = 42. The charge is neutral.
S- sulphur is the16th element with mass number 32. The number of neutrons and protons are 16. Since the charge is -2, number of electrons = 18.

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