Atomic Structure

Front

Subatomic particles with a negative charge

Back

Electrons

Front

Subatomic particles with a positive charge

Back

protons

Front

Value representing the number of protons in an element

Back

Atomic Number

Front

Subatomic particles that are neutral in charge

Back

Neutrons

Front

Atoms of the same element with a different number of neutrons

Back

Isotope

Front

How many protons does an aluminum atom have?

Back

13

Front

How many neutrons does a sodium atom have? Round the atomic mass to get your mass number.

Back

12

Front

Mass number of an element with 18 protons, 18 electrons, and 19 neutrons.

Back

37

Front

If X is the symbol for an element, which of the following two symbols represent isotopes of the same element? I. ⁷⁷₃₅X II. ⁷⁷₃₃X III. ⁸¹₃₇X IV. ⁸¹₃₅X

Back

I and IV

Front

Which isotope of lead is likely to be the most abundant given the isotopes: lead-204, lead-206, lead-207, and lead-208, with an average atomic mass of 207.2?

Back

lead-207