Chemistry Midterm Review

Question 1

1s22s22p63s23p2 is the correct electron configuration for which of the following atoms?

Accepted Answer

Si

Question 2

Rank the elements from the smallest to the largest atomic diameter

Accepted Answer

Kr, Cr, Ca, Zn, Br, K

Question 3

Which of the following is an Alkaline Earth Metal?

Accepted Answer

Magnesium (Mg)

Question 4

The alkali metals have how many valence electrons?

Accepted Answer

1

Question 5

How many neutrons are there in one atom of 48/22Ti

Accepted Answer

26

Question 6

Which of the following is a halogen?

Accepted Answer

Bromine (Br)

Question 7

The element with the electron configuration [Kr] 5s24d105p3 is

Accepted Answer

Sb

Question 8

The correct name for SiO2 is

Accepted Answer

silicon dioxide

Question 9

The electron configuration for manganese is

Accepted Answer

[Ar] 4s23d5

Question 10

Which ion has a valence shell that is identical as the nobel gas argon (Ar)?

Accepted Answer

K1+

Question 11

The correct formula for boron trifluoride is

Accepted Answer

BF3

Question 12

The correct name for CaO is

Accepted Answer

calcium oxide

Question 13

The identity of an element is determined by its

Accepted Answer

atomic number

Question 14

When they react chemically, the halogens (Group 7)

Accepted Answer

gain 1 electron

Question 15

When moving down a group (family) in the periodic table, the number of valence electrons

Accepted Answer

remains constant

Question 16

The correct name for LiCl is

Accepted Answer

lithium chloride

Question 17

The number of protons in 200/80Hg is

Accepted Answer

80

Question 18

A phosphorus atom needs to gain ___ electrons to achieve a noble gas configuration.

Accepted Answer

3

Question 19

Which of the following is a transition metal?

Accepted Answer

Nickel (Ni)

Question 20

Which sequence of elements show their rank from the lowest electronegativity to the highest?

Accepted Answer

Fr, Cs, Rb, K, Na, Li

Question 21

Metal atoms tend to ___ electrons and form ___ ions.

Accepted Answer

lose; positive

Question 22

The number of p orbitals in the fourth principal energy level is

Accepted Answer

3

Question 23

The mass number of an atom equals

Accepted Answer

the number of protons plus the number of neutrons per atom

Question 24

Which pair of elements form an ionic bond

Accepted Answer

Li and F

Question 25

An atom’s nucleus is made of which of the following:

Accepted Answer

Protons and Neutrons

Question 26

How many lone pairs of electrons are in the Lewis structure for ammonia, NH3?

Accepted Answer

1

Question 27

The correct name for Fe2O3 is

Accepted Answer

iron (III) oxide

Question 28

When moving across a row in the periodic table, the number of valence electrons

Accepted Answer

increases by 1

Question 29

Which of the following is a Metalloid?

Accepted Answer

Germanium (Ge)

Question 30

Which sequence of elements show their rank from the lowest electronegativity to the highest?

Accepted Answer

At, Te, As, Si, B

Question 31

The electron configuration for the bromide ion is identical to that of

Accepted Answer

Kr

Question 32

Which of the following is NOT transition metal?

Accepted Answer

Strontium (Sr)

Question 33

A d sublevel can hold a maximum of

Accepted Answer

10 electrons

Question 34

The lowest possible energy state of an atom is called its ______________ state.

Accepted Answer

ground

Question 35

Which of the following has the smallest radius?

Accepted Answer

Ar

Question 36

Which element has four electrons available for bonding?

Accepted Answer

Tin (Sn)

Question 37

The correct formula for iron (III) nitrate is

Accepted Answer

Fe(NO3)3

Question 38

The ______ model is made entirely of metal atoms; conducts electricity; forms bendable solids.

Accepted Answer

Metallic

Question 39

Which subatomic particle is NOT used to determine an atoms atomic mass?

Accepted Answer

electrons

Question 40

Which element has six (6) electrons in the valence shell?

Accepted Answer

Silicon (Si)

Question 41

The number of protons in the nucleus of an atom is called its

Accepted Answer

atomic number

Question 42

The halogens (Group 7) contain how many valence electrons?

Accepted Answer

7

Question 43

The electron configuration for magnesium is

Accepted Answer

[Ne] 3s2

Question 44

Which of the following is NOT a metal?

Accepted Answer

Phosphorus (P)

Chemistry Midterm Review

Questions 44

Chemistry Midterm Review

Questions 44