atomic structure

Question 1

what is an atom

Answer 1

the smallest part of an element that can exist

Question 2

what is an atomic nucleus

Answer 2

the positively charged centre of an atom that contains protons and neutrons

Question 3

what is a subatomic particle

Answer 3

an electron, proton or neutron

Question 4

what is an atomic number of an element

Answer 4

the number of protons or electrons in the nucleus

Question 5

what is an electron

Answer 5

a negatively charged subatomic particle which orbits the nucleus, it has a relative mass of 1/1840

Question 6

what is an isotope

Answer 6

atoms of the same element with the same number of protons but different number of neutrons

Question 7

what is a mass number

Answer 7

the total number of protons and neutrons in the nucleus

Question 8

what is a neutron

Answer 8

a neutral subatomic particle (0 charge) in the nucleus of an atom, with the relative mass of 1

Question 9

what is a proton

Answer 9

a positively charged subatomic particle in the nucleus of an atom, with the relative mass of 1

Question 10

what are orbitals

Answer 10

electrons are separated into pairs, with opposite spin, the orbitals are known as s,p,d and f