Unit 4: Periodic Table

Question 1

These elements are poor conductors of heat and electricity, have low mp/bps, are brittle(s).

Accepted Answer

Nonmetals

Question 2

An aqueous solution makes for a colorful appearance. This solution may contain

Accepted Answer

Ni

Question 3

Which of these elements has the lowest melting point?

Accepted Answer

Rb

Question 4

A diatomic element with a high first ionization energy would most likely be a

Accepted Answer

nonmetal with high electronegativity

Question 5

Which element attains the structure of a noble gas when it becomes a 1+ ion?

Accepted Answer

K

Question 6

What is the general trend in electronegativity as you go across Period 2 elements (from Li→F)?

Accepted Answer

Electronegativity increases

Question 7

On the Periodic Table, elements are arranged in order of increasing

Accepted Answer

atomic number

Question 8

These metals are soft, silvery, highly reactive, and are never found uncombined (never alone).

Accepted Answer

Group 1- Alkali Metals

Question 9

As elements of Group 17 are considered in order of increasing atomic #, there's an increase in

Accepted Answer

atomic radius

Question 10

The elements in Period 3 all contain the same number of

Accepted Answer

occupied principal energy levels

Question 11

Compared to atoms of metals, atoms of nonmetals generally

Accepted Answer

have higher electronegativities

Question 12

Which characteristic describes most nonmentals in the solid phase?

Accepted Answer

brittle

Question 13

In which group of elements do the atoms have completely filled valence shell?

Accepted Answer

Noble gases

Question 14

Which element is a metal that is in the liquid phase at STP?

Accepted Answer

mercury

Question 15

The definition of ionization energy:

Accepted Answer

Amt. of energy required to remove a specific e- from an atom

Question 16

Which of the following group 15 elements has the most metallic properties?

Accepted Answer

Bi

Question 17

Which list of elements consists of a metal, a metalloid and a nonmetal?

Accepted Answer

Sn, Si, C

Question 18

This element is an inert gas at STP.

Accepted Answer

noble gas

Question 19

Which element in Period 4 is classified as an active nonmetal?

Accepted Answer

Br

Question 20

Which statement describes oxygen gas (O2) and ozone gas, O3?

Accepted Answer

Different molecular structures and different properties.

Questions 20