Chemistry chapter 8

which of these elements has the greatest electron affinity (largest positive value)?

b S

how many 3d electrons does an Fe^3+ ion have

e 5

which of these elements form stable +2 cations

a Ba

Which of these atoms has the greatest electron affinity (largest positive value)?

a Br

which of these elements has the highest first ionization energy

a C

which of these elements is a transition element?

a Fe

the elements in group7A are known by what name

a halogens

which of these ions does not have (Kr) as its electronic configuration

b Zn^2+

consider the element with the electron configuration (Xe)6s^24f^7. This element is

b a lanthanide element

The general electron configuration for atoms of the halogen group is

b ns^2np^5

which of these elements has the smallest ionization energy?

b rb

WHich 2 electron configurations represent elements that would have similar chemical properties?

c 1 and 4

the cobalt (111) ion, Co^3+, has how many 3d electrons

c 6

which of the elements listed below has the greatest atomic radius

c Al

which pair of elements from different groups resemble each other the most in their chemical properties?

c Al and Be

which ion is isoelectronic with Ar

c Ca^2+

which of these choices is the electron configuration for the aluminium ion

c Is^2 2s^2 2p^6

which of the species make an isoelectronic pair: cl-, 0^2-,F,Ca^2+, Fe^3+?

c cl^- and Ca^2+

the general electron configuration for atoms of all elements in Group 5A is

c ns^2np^3

which of these atoms has the smallest radius

d P

consider the element with the electron configuration (kr)5s^24d^7

d a transition metal

which of these elements has the smallest first ionization energy

d k

which of these choices is the general electron configuration for the outermost electrons of elements in the alkaline earth group

d ns^2

The general electron configuration for noble gas atoms is

d ns^2np^6

which of these choices is the electron configuration of a sulfide ion

e (Ar)

which of these elements has the greatest electron affinity (largest positive value)

e Br

which of these atoms has the largest radius

e Ga

The alkali metal elements are found in ___ of the periodic table.

e group 1A

which of these pairs consists of isoelectronic species

e k^+ AND Cl^-

how many electrons are in the 4p orbitals of selenium

e. 4