Periodic Table

Question 1

periods

Answer 1

7 rows (horizontal)

Question 2

groups

Answer 2

• columns (vertical)

- elements that have the same number of valence electrons

Question 3

atomic radius

Answer 3

• increases across a period from right to left (shielding effect)
• increases down a group

Question 4

ionization energy

Answer 4

• the energy required to remove an electron completely from a gaseous atom or ion
• increases from left to right across a period
• increases going up a group

Question 5

electron affinity

Answer 5

• the energy change that occurs when an electron is added to a gaseous atom and it represents the ease with which an atom can accept an electron
• depends on how many valence electrons there are

Question 6

electronegativity

Answer 6

• measure of the attraction as atom has for electrons in a chemical bond
• increases across periods from left to right
• increases going up a group

Question 7

orbital

Answer 7

• each orbital is filled with 2 electrons with opposite spins
• s subshell has 1 orbital
• p subshell has 3 orbitals
• d subshell has 5 orbitals

Question 8

transition metals

Answer 8

• many can be found in their metallic form in nature

- metallic character

Question 9

active metals

Answer 9

-so reactive that they are found in nature only in the cationic form

Question 10

nonmetals

Answer 10

• brittle and solid
• poor conductors of heat and electricity
• electronegative (want to gain electrons)

Question 11

metals

Answer 11

• malleable and ductile

- high conductivity