Which periodic group or series of elements is not correctly matched with its common family name?

alkaline earth elements IIA

alkali metals IIIA

lanthanides ₅₈Ce-₇₁Lu

halogens VIIA

noble gases 0

Which one is an inner transition (f-transition) element?

Rb

Ho

Co

Ru

Bi

Which element of the following does not match its designation?

Sr representitive metal

In representitive nonmetal

Si metalloid

W d-transition metal

Th f-transition metal

----- is a representative element.

Ti

Mo

Tl

Kr

U

----- is a noble gas.

Ti

Mo

Tl

Kr

U

----- is an actinide.

Ti

Mo

Tl

Kr

U

What would be the outer electron configuration of group VIA?

ns²np⁶

ns²np²

ns²np⁴

np⁶

ns⁰np⁶
What would be the outer electron configuration of group IVA?

ns²nd²np⁰

ns²np⁴

ns⁰np⁴

ns¹np³

ns²np²

Which element has the largest atomic radius?

Al

Si

P

S

Cl

Which element has the largest atomic radius?

B

Al

Ga

In

Tl

Which element has the largest atomic radius?

Cs

Ba

Tl

Pb

Bi

Which element has the largest atomic radius?

Ga

In

Ge

P

O

Which element has the largest atomic radius?

Li

Na

Rb

F

I

Which element has the largest atomic radius?

Mo

Mg

Ba

Cl

At

Which element has the largest atomic radius?

F

S

Na

Ni

Rb

Which element has the smallest radius?

Na

Mg

Al

Si

P

Which element has the smallest radius?

F

Cl

Br

I

At

Which element has the smallest radius?

Ca

Ga

Ge

As

Se

Which element has the smallest radius?

K

Na

Rb

Mg

Cl

Arrange the following elements in order of increasing atomic radii.
Sr, Rb, Sn, I, IN

Rb, Sr, In, Sb, I

I, Sb, In, Rb, Sr

In, Sb, I, Sr, Rb

Sb, I, In, Sr, Rb

I, Sb, In, Sr, Rb

Arrange the following elements in order of incresing atomic radii.
. K, Na, Mg, Cs, Cl

Na, Mg, Cl, K, Cs

Cl, Mg, Na, K, Cs

Cs, K, Cl, Mg, Na

Cl, Mg, Cs, K, Na

Cl, Mg, Na, Cs, K

Arrange the following elemnts in order of decreasing atomic radii.
Pb, P, Cl, F, Si

Cl, F, Pb, Si, P

Pb, Si, P, F, Cl

Pb, Si, P, Cl, F

Pb, Cl, P, Si, F

Pb, Cl, P, F, Si

The first ionization energy of sulfur is less than that of phosphorus. A reasonable explanation for this fact involves

the stability of half filled electronic energy levels in atomic sulfer.

pairing of two electrons in one 3p orbital in sulfur atoms.

the smaller size of sulfur atoms relative to phosphorus atoms.

the ease with which phosphorus attains a noble gas electronic configuration.

the higher electronegativity of sulfur relative to phosphorus.

Which element has the lowest first ionization energy?

F

Cl

Br

I

At

Which element has the lowest first ionization energy?

Al

Si

P

S

Cl

Which element has the lowest first ionization energy?

F

B

O

S

Sr

Which element has the lowest first ionization energy?

Be

B

C

N

O

Which element has the highest first ionization energy?

B

Al

Ga

In

Tl

Which element has the highest first ionization energy?

Na

Mg

Al

Si

P

Which element has the highest first ionization energy?

Li

Cs

Cl

I

Ar

Which element has the highest first ionization energy?

Be

B

C

N

O

The amount of energy absorbed in the process in which an electron is added to a neutral gaseous atom is defined as -----.

first ionization energy

electronegativity

electron affinity

standard reduction potential

none of these

Which one of the following species is not isoelectronic with neon?

Mg²⁺

Na⁺

O^2-

Cl^-

Al³⁺

Which one of the3 following pairs contains isoelectronic species?

Na, Na⁺

S, Se

S^2-, Se^2-

F₂, Cl₂

Na⁺, O^2-

Which one of the following ions is not isoelectronic with a noble gas?

Mg²⁺

P^2-

Cs⁺

Se^2-

Ba²⁺

Which ion has the largest radius?

O^2-

S^2-

Se^2-

Te^2-

Po^2-

Which ion has the largest radius?

Li⁺

Na⁺

Be²⁺

Mg²⁺

Al³⁺

Which ion has the largest radius?

P^3-

S^2-

Cl^-

N^3-

F^-

Which ion has the smallest radius?

F^-

Cl^-

Br^-

I^-

At^-

Which ion has the smallest radius?

As^3-

Se^2-

Br^-

Rb⁺

Sr²⁺

Which ion has the smallest radius?

K⁺

Cs⁺

Sr²⁺

Ba²⁺

Tl³⁺

Which ion has the smallest radius?

K⁺

Rb⁺

Ca²⁺

Sr²⁺

Ba²⁺

Which ion or atom has the largest radius?

S

S^2-

Se

Se^2-

Br

Which ion or atom has the largest radius?

Sr²⁺

Rb⁺

Kr

Br^-

Se^2-

Arrange the following set of ions in order of increasing atomic radii.
Ca²⁺, Cl^-, K⁺, P^3-, S^2-

Ca²⁺, K⁺, P^3-, S^2-, Cl^-

K⁺, Cl^-, Ca²⁺, S^2-, P^3-

Ca²⁺, K⁺, Cl^-, S^2-, P^3-

Cl^-, S^2-, P^3-, Ca²⁺, K⁺

P^3-, S^2-, Cl^-, K⁺, Ca²⁺

Which one of the following properties is based on the attrraction of an atom for electrons in a chemical bond?

binding energy

mass defect

electron affinity

ionization energy

electronegativity

Which element has the lowest electronegativity?

H

Li

Na

K

Cs

Which element has the lowest electronegativity?

K

Ca

Ga

Ge

As

Which element has the lowest electronegativity?

P

As

Sb

Te

I

Which element has the lowest electronegativity?

Be

Ba

Ga

Tl

I

Which element has the highest electronegativity?

C

Si

Ge

Sn

Pb

Which element has the highest electronegativity?

Li

N

K

As

Ba

Which element has the highest electronegativity?

B

Ge

Cs

O

At

Arrange the following elements in order of increasing electronegativities.
At, Bi, Cl, F, I

At, Bi, Cl, F, I

F, Cl, Bi, I, At

Bi, At, I, Cl, F

F, Cl, I, At, Bi

At, Bi, I, Cl, F

Which of the following elements has the greatest attraction for electrons in a covalent bond?

Ge

As

Se

Br

Kr

Which of the following pairs of elements would be expected to form an ionic compound?

S, F

H, C

Rb, Cl

As, Br

C, I

Which pair of elements would be least likely to form an ionic bond between them?

Na, S

C, N

Al, F

Mg, Br

Cs, O

Which of the following reactions does not form H₂ gas?

electrolysis of H₂O

zinc with HCl

combustion of ethane, C₂H₆

iron with steam

thermal cracking of hydrocarbons

Which one of the following pure compounds of hydrogen is ionic?

HF

HCl

NaH

H₂O

H₂Se

Which one of the following is an ionic hydride?

CH₄

H₂Se

AsH₃

BaH₂

B₂H₆

Which one of the following is a covalent hydride?

RbH

SrH₂

NaH

PH₃

CaH₂

Which one of the following hydrides is basic?

H₂Te

B₂H₆

CaH₂

HI

CH₄

Oxygen was discovered by Priestly in 1774 when he observed the -----.

electrolysis of water

thermal decomposition of mercury(II) oxide

reaction of sulfuric acid with sodium

results of fractional distillation of air

the thermal decomposition of potassium chlorate

Which statement does not accurately describe ozone?

Its molecules are angular.

Its density is one and a half times that of O₂.

Its molecules are paramagnetic.

It is unstable.

It is a very strong oxidizing agent.

Which one of the following does not represent correctly the major product formed by the reaction of an alkali metal with oxygen at ordinary temperatures and pressures?

Li₂O₂

Na₂O₂

KO₂

RbO₂

CsO₂

Which one of the following will not react with oxygen to form a peroxide?

Be

Ca

Sr

Ba

all form peroxides

Which one of the following compounds is a superoxide?

Na₂O₂

SrO

KO₂

Li₂O

Cl₂O₇

What is the principal product of the reaction of sodium with oxygen?

NaO

Na₂O

Na₂O₂

NaO₂

Na₂O₃