Chem 312, Unit 5 - The Periodic Table

Question 1

Classify an element that has a high melting point and can conduct electricity when molten.

Accepted Answer

Metal

Question 2

Which of the following is the smallest?

Accepted Answer

Magnesium ion (Mg2+)

Question 3

What do elements in the same group have in common that gives them similar chemical properties?

Accepted Answer

Same number of valence electrons

Question 4

Which of the following elements would be a brittle solid with a low melting point?

Accepted Answer

Sulfur (S)

Question 5

How would you classify tungsten?

Accepted Answer

Transition metal, d-block

Question 6

Which family of elements has 7 valence electrons?

Accepted Answer

Halogens

Question 7

Which alkaline earth metals has valence electrons in the 5th energy level?

Accepted Answer

Strontium

Question 8

Which scientist organized the periodic table according to increasing atomic number?

Accepted Answer

Mosely

Question 9

Which of the following families are known as semiconductors (aka semi-metals)?

Accepted Answer

Metalloids

Question 10

When aluminum forms an ion, it attains the same electron configuration as what noble gas?

Accepted Answer

Neon

Question 11

Which two are the only elements that are liquids at room temperature?

Accepted Answer

Mercury, Bromine

Question 12

Which of the following elements has the highest ionization energy?

Accepted Answer

Sulfur (S)

Question 13

Which of the following has the greatest electronegativity?

Accepted Answer

Cobalt (Co)

Question 14

How would you classify Arsenic (As)?

Accepted Answer

Representative, metalloid, p-bock

Question 15

Which of the following elements has an electron configuration that ends in 4d3?

Accepted Answer

Niobium (Nb)

Question 16

Which of the following scientists organized elements according to increasing atomic mass?

Accepted Answer

Mendeleev

Question 17

Which of the following elements would have properties similar to that of radium (Ra)?

Accepted Answer

Beryillium (Be)

Question 18

Which scientist explained periodicity as "The Law of Octaves"?

Accepted Answer

Newlands

Question 19

Classify an element that lacks a shiny luster.

Accepted Answer

Non-metal

Question 20

Which of the following terms describes an atom's ability to attract electrons?

Accepted Answer

Electronegativity

Question 21

Which group 13 element is a metalloid?

Accepted Answer

Boron

Question 22

Which of the following is the largest?

Accepted Answer

Sulfur ion (S2-)

Question 23

Which element is in group 5, period 4?

Accepted Answer

Vanadium (V)

Question 24

Why do atoms gain or lose electrons?

Accepted Answer

To obtain a full octet

Question 25

Which of the following ions is the largest?

Accepted Answer

Arsenic (As)

Chem 312, Unit 5 - The Periodic Table

Questions 25

Chem 312, Unit 5 - The Periodic Table

Questions 25