Chemistry Review

Which element has the highest atomic radius (2 questions each)

100

N  or F

Bi or Ca

N

Ca

200

Fr  or F 

As or Bi

Fr

Bi

300

P  or Cl

Xe  or Ar

P

Xe

400

Ca  or  K

I   or  Sb

K

Sb

500

P  or  Al

Ba  or  Ga

Al

Ba

Which of the following has the highest ionization energry (2 questions each)

100

Cl  or  F

Be  or  Sr

F

Be

200

Sr  or  F

Tl  or  Ar

F

Ar

300

Ra  or  Mg

Xe  or  Ne

Mg

Ne

400

Sn  or  I

In  or  Ga

I

Ga

500

S  or  Al

Ba  or  Cs

S

Ba

Atomic Radii Table

100

• What do you notice about the size of atoms as we move down the periodic table?
  
  

• As you move down an element group (column), the size of atoms increases. This is because each atom further down the column has more protons and neutrons and also gains an additional electron energy shell. 

200

• What do you notice about the size of atoms as we move to the right?

Moving from left to right across a period, the atomic radius decreases. The nucleus of the atom gains protons moving from left to right, increasing the positive charge of the nucleus and increasing the attractive force of the nucleus upon the electrons.

300

• In your own words, how would you describe the trend for atomic radius?

atomic radius increases as we go left and down the periodic table Fr has the highest atomic radius

400

• In your own words, what is the trend for ionization energy?
  
  

ionization energy increase as we go left and up He has the highest ionization energy

500

• Which of the following correctly lists the five atoms in order of increasing size (smallest to largest)?
  
  

  A) F < K < Ge < Br < Rb             

  B) F < Ge < Br < K < Rb              

  C) F < K < Br < Ge < Rb

  D) F < Br < Ge < K < Rb              

  E) F < Br < Ge < Rb < K

D) F < Br < Ge < K < Rb    

how much do you know

100

Of the following, which gives the correct order for increasing atomic radius for Mg, Na, P, Si and Ar?

A) Mg > Na > P > Si > Ar           

B) Ar > Si > P > Na > Mg           

C) Si > P > Ar > Na > Mg

D) Na > Mg > Si > P > Ar           

E) Ar > P > Si > Mg > Na 

E) Ar > P > Si > Mg > Na

200

The atomic radius of main-group elements generally increases down a group because ________.

A) the number of protons increases, pulling electrons closer to the nucleus

B) The number of shells increases causing more shielding 

C) a decrease in shielding makes the atom larger

D) Atomic radius does not increase down a group

B) The number of shells increases causing more shielding

300

Which one of the following atoms has the largest radius?

A) O                                                

B) F                                                 

C) S

D) Cl                                               

E) Ne

C) S

400

The attractive force between the nucleus and the electrons of an atom is primarily affected by __________ (select all the apply)

a. the number of protons

b. The number of inner shell electrons

c. The amount of shielding

d. The neutron number

e. The generation of an ion

b. The number of inner shell electrons

c. The amount of shielding

500

write the orbital configuration and the electron configuration for Zn

1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰

How much do you know

100

What is Ionization Energy

Ionization energy is the energy required to remove the outermost electron. A high ionization energy means it is hard to remove an electron, a low IE means it is easier to remove this electron

200

What is the Atomic Radius

The Atomic Radius is the size of the atom

300

what is Electronegativity

Electronegativity is the ability of an atom to withdraw electrons in a bond. A high electronegativity means it can easily take up electrons in a bond.

400

Elements in the modern version of the periodic table are arranged in order of increasing __________.

A) oxidation number                

B) atomic mass                                         

C) average atomic mass

D) atomic number                     

E) number of isotopes

D) atomic number  

500

Atomic radius generally increases as we move __________.

A) down a group and from right to left across a period 

B) up a group and from left to right across a period

C) down a group and from left to right across a period

D) up a group and from right to left across a period

E) down a group; the period position has no effect

A) down a group and from right to left across a period