Periodic Law And Periodic Table

Question 1

Independently developed the precursor to the moden periodic table of elements

Answer 1

Dmitri Mendeleev and Lothar meyer

Question 2

physical and chem propreties of elements are periodic functions of their atomic numbers

Answer 2

periodic law

Question 3

Classification of elements

Answer 3

metals
non metals
metalloids

Question 4

Arrangement of electrons in atomic orbitals

Answer 4

Electron configuration

Question 5

describes the location of an electron and specifies the properties of atomic orbitals and electrons

Answer 5

Quantum numbers

Question 6

impossible to measure accurately bothe the position and momentum of a particle simultaneously

Answer 6

Heisenberg uncertainty principle

Question 7

Eah orbital can hold up to two electrons with opposite spins

Answer 7

Pauli’s exclusion principle

Question 8

each orbital in a subshell is half filled first before the downward spin

Answer 8

Hund’s rule

Question 9

shows orbitals as boxes and electrons as atoms

Answer 9

orbital diagrams

Question 10

gain of electrons that results in a negatively charged particle

Answer 10

Anion

Question 11

loss of electrons = positively charged

Answer 11

cation

Question 12

Trends in the periodic table

Answer 12

Atomic size r to l ; up down

Electronegativity l to r; down up
Ionization energy
Electron Affinity

Question 13

Distance between nucleus and the outermost shell of an atom

Answer 13

Atomic size

Question 14

ability of an atom to attract toward tself the electrons in a chem bond

Answer 14

Electronegativity

Question 15

energy required to remove an electron from an atom; lower —– means that its easy to form a cation (positively charged)

Answer 15

Ionization energy

Question 16

energy released when a single electron is added to an isolated atom. higher of this makes it easy to form anions (negatively charged)

Answer 16

Electron affinity