Chem Ch 5 Review

Who arranged a number of the elements in triads on the basis of similar properties?

• Dobereiner

• Pauling

• Mendeleev

• Newlands

What chemist arranged the elements according to increasing atomic masses and thereby discovered the relationship he called the law of octaves?

• Cavendish

• Newlands

• Moseley

• Pauling

Whose work resulted in the revision of the periodic law and the atomic number being used as the organizing factor for the elements of the periodic table?

• Lord Rayleigh

• Dalton

• Mendeleev

• Moseley

This Nobel Prize-winning chemist devised an electronegativity scale.

• Cavendish

• Pauling

• Dalton

• Lord Rayleigh

In general, where are the nonmetals located on the periodic table?

• the far left side

• the far right side

• the center

• the bottom

In general, which is the group of elements that tends to have the strongest electron affinity?

• halogens

• alkaline-earth metals

• nitrogen family

• transition metals

Mendeleev's periodic table arranged elements by

• atomic number

• number of neutrons

• atomic mass

• electronegativity

It is the lightest and most abundant element in the universe, is extremely flammable in air, and is used in the industrial production of ammonia.

• Hydrogen

• Sulfur

• silicon

• helium

Existing as diatomic molecules, this gas is tasteless, colorless, and odorless, and it accounts for approximately 78% of the earth's atmosphere.

• oxygen

• phospherus

• helium

• nitrogen

This element constitutes 21% of the earth's atmosphere and is the most abundant element in the earth's crust. it is essential for life in all animals and in humans for cellular respiration.

• hydrogen

• silicon

• oxygen

• carbon