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Mathematics 8 Online
OpenStudy (anonymous):

One isotope of a metallic element has the mass number 65 and 35 neutrons in the nucleus. the cation derived from the isotope has 28 electrons. a. what is the symbol for the element? b. what is the charge?

OpenStudy (lgbasallote):

hint: there are 30 protons so atomic number is 30 then it lost 2 electrons so charge is 2+ does that help?

OpenStudy (anonymous):

the thing says charge of +2 is not correct

OpenStudy (lgbasallote):

try 2+

OpenStudy (anonymous):

ok. do you know what the symbol is?

OpenStudy (lgbasallote):

look at your periodic table. which element has atomic number 30?

OpenStudy (anonymous):

Zinc, but i dont know what the atomic mass is..

OpenStudy (lgbasallote):

why do you need to know what the atomic mass is?

OpenStudy (anonymous):

got it, thanks!!

OpenStudy (lgbasallote):

lol welcome

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