2.1 a Atomic Structure

Question 1

What is an isotope?

Answer 1

A form of a chemical element in which atoms have the same number of protons and electrons but different electrons .

Identified by mass (protons+neutrons)

Question 2

Where are protons and neutrons found in an atom?

Answer 2

nucleus

Question 3

Where are electrons found in an atom?

Answer 3

outer orbitals

Question 4

What are the maximum number of electrons that can be filled in each ring level around the nucleus?

Answer 4

first level = 2
second level = 8

Question 5

Valance electrons

Answer 5

electrons in the outermost shell of an atom (max 8).

Question 6

What are the charges of protons, neutrons, and electrons?

Answer 6

protons= positive +
electrons= negative -
neutrons= no charge

Question 7

If the nucleus is unstable,

Answer 7

then the atom is radioactive

Question 8

atomic number

Answer 8

= number of protons

Question 9

atomic number

Answer 9

= number of electrons

Question 10

number of electrons =

Answer 10

= number of protons

Question 11

number of neutrons

Answer 11

= mass number - atomic number

Question 12

Why can isotopes be useful in scientific research? explain.

Answer 12

Isotopes have unique properties, and these properties make them useful in diagnostics and treatment applications.