OL Unit Periodic Table

Question 1

Elements have similar chemical characteristics because they have the same number of

Accepted Answer

valence electrons

Question 2

How strongly an atom (element) ATTRACTS an electron is called...

Accepted Answer

Electronegativity

Question 3

Who was the first person to make the periodic table?

Accepted Answer

Mendeleev

Question 4

Moseley organized the table by:

Accepted Answer

atomic number

Question 5

Phosphorus has _____ valence electrons.

Accepted Answer

5

Question 6

Zeff is short for

Accepted Answer

effective nuclear charge

Question 7

Will Beryllium or Magnesium have the smallest electronegativity? and why?

Accepted Answer

Mg; high e- shielding; more energy levels

Question 8

Which has the largest ionization energy between Polonium and Oxygen?

Accepted Answer

O; low e- shielding; less energy levels

Question 9

Ionization energy increases in these directions:

Accepted Answer

right; up

Question 10

What is the ionic charge of chlorine?

Accepted Answer

-1

Question 11

Potassium is part of which family?

Accepted Answer

alkali metals

Question 12

Which family reacts VIOLENTLY with water?

Accepted Answer

Alkali metals

Question 13

Which family (other than noble gases) are mostly gases?

Accepted Answer

Halogens

Question 14

Why does an ionic charge of -2 mean?

Accepted Answer

gains 2 electrons

Question 15

Which family has 1 valence electron?

Accepted Answer

Alkali metals

Question 16

What factor is most important in determining the periodic trends across a period?

Accepted Answer

protons, Zeff

Question 17

Which family is NOT reactive?

Accepted Answer

noble gases

Question 18

Atomic radius increases in these directions?

Accepted Answer

left; down

Question 19

Which has the largest atomic radius between: Bromine vs Calcium?

Accepted Answer

Ca; low Zeff; less protons

Question 20

Which one is smaller?

Accepted Answer

S

Question 21

Magnesium has _____ valence electrons.

Accepted Answer

2

Question 22

What factor is most important in determining the trend going down a group?

Accepted Answer

energy levels, e- shielding

Question 23

inner e- block outer e- from nuclear pull is the definition of:

Accepted Answer

e- shielding

Question 24

What is the ionic charge of Na?

Accepted Answer

+1

Question 25

Mendeleev organized the periodic table by:

Accepted Answer

atomic mass & properties

Question 26

Electronegativity increases in these directions:

Accepted Answer

right; up

Question 27

how strongly nucleus pulls on electrons is the definition of:

Accepted Answer

Zeff

Question 28

Why does calcium have a charge of +2?

Accepted Answer

loses 2 electrons

Question 29

Which one is larger?

Accepted Answer

B

Question 30

Chlorine is part of which family?

Accepted Answer

halogens

Question 31

How much energy it takes to REMOVE an electron is called...

Accepted Answer

Ionization Energy

OL Unit Periodic Table

Questions 31

OL Unit Periodic Table

Questions 31