exam chapter 5

Question 1

ionization energy is the energy required to remove ______ from an atom of an element

Answer 1

electron

Question 2

one half the distance between the nuclei of identical atoms combined in an element is called

Answer 2

atomic radius

Question 3

elements in series 7 are known as the

Answer 3

actinides

Question 4

mosley arranged elements on the periodic table by their

Answer 4

atomic number

Question 5

the orbitals in series 6 and 7 are

Answer 5

f

Question 6

the group of silvery, soft, active metals, all of which have 1 electron in an s orbital, is known as

Answer 6

alkali metals

Question 7

the most active nonmetal is

Answer 7

flourine

Question 8

the transition elements are called the

Answer 8

d block elemtns

Question 9

within a group of elements, as the atomic number increases, the atomic radius

Answer 9

increases

Question 10

whithin a period, ionization energy generally

Answer 10

increases

Question 11

process involving the gain of an electron by an atom

Answer 11

electron affinity

Question 12

the discovery of the noble gases changed mendeleev’s periodic table by adding a new

Answer 12

group

Question 13

when an electron is added to a neutral atom, energy is

Answer 13

either absorbed or released

Question 14

the most active metals is

Answer 14

francium

Question 15

the principle that states that the physical and chemical properties of the elements are periodic function of their atmoic masses is known as the

Answer 15

periodic law

Question 16

atomic radius ______ across a period

______ down a group

Answer 16

decreases across

increases down

Question 17

the ability of an atom in a chemical compound to gain an electron from another atom in the compound

Answer 17

electronegativity

Question 18

most and least electronegative gropus

Answer 18

group 1 - least

group 17- most