Atomic Structure

Question 1

what is the relative mass of a proton?

Answer 1

1

Question 2

what is the relative electronic charge of a proton?

Answer 2

+1

Question 3

what is the relative mass of a neutron?

Answer 3

1

Question 4

what is the relative electronic charge of a neutron?

Answer 4

0

Question 5

what is the relative mass of an electron?

Answer 5

1/1836 approximately 0

Question 6

what is the relative electronic charge of an electron?

Answer 6

-1

Question 7

what is the maximum amount of electrons the first shell can hold?

Answer 7

2

Question 8

what is the maximum amount of electrons the second shell can hold?

Answer 8

8

Question 9

what is the maximum amount of electrons the third shell can hold?

Answer 9

8

Question 10

what is the proton number?

Answer 10

• is equal to the electron number

- is also called the atomic number

Question 11

what is the neucleon number?

Answer 11

• is the total number of protons and neutrons

- is also called the mass number or atomic mass

Question 12

how to find the number of neutrons from the neucleon number?

Answer 12

neucleon number - number of protons = number of neutrons

Question 13

what are ions?

Answer 13

an ion is formed when an atom loses or gains one or more electrons

Question 14

what is the charge when electrons are lost?

Answer 14

positively charged

Question 15

what is the charge when electrons are gained?

Answer 15

negatively charged

Question 16

what are positively charged ions called?

Answer 16

cations

Question 17

what are negatively charged ions called?

Answer 17

anions

Question 18

what are isotopes?

Answer 18

atoms of the same element with different numbers of neutrons

Question 19

what is the difference between a isotopes and it’s atom?

Answer 19

• isotopes of the same element have the same chemical properties and form compounds with the same chemical formulae
• however, there are some small differences in physical properties