Chemistry, 20.10.2019 01:30 pineapplepizaaaaa

Which of the following is true regarding the transition elements?

a. multiple oxidation states resulting from the involvement of d electrons in bonding is a characteristic of transition elements.
b. changes in atomic radii in transition elements are greater than those in the main group elements.
c. most transition elements have lower melting and boiling points than the main group elements.
d. transition elements have predictable reactivity patterns.

Answers: 3

Show answers

Another question on Chemistry

Chemistry, 22.06.2019 00:00

Substance x has a fixed volume, and the attraction between its particles is strong .substance y had widely spread out particles and can be compressed what can most likely be concluded about these substances

Answers: 2

Answer

Chemistry, 22.06.2019 10:30

Great amounts of electromagnetic energy from our sun and other bodies in space travel through space. which is a logical conclusion about these electromagnetic waves? their energy must be very their frequency must be very low these waves can travel without a medium they only travel through a vacuum of space

Answers: 2

Answer

Chemistry, 22.06.2019 14:30

How do temperature and salinity affect deepwater currents? as temperatures and salinity levels of water increase, the water rises to the surface where it creates currents as it moves to colder regions. they create changes in wind direction, moving denser water in the same direction as the wind and causing the deepwater circulation patterns found in the ocean. they equalize the forces on undersea currents caused by the coriolis effect as they replace more dense water with less dense water. they create density differences that cause dense deepwater currents to flow toward the equator where they displace less dense, warmer water above them.

Answers: 2

Answer

Chemistry, 22.06.2019 20:00

There are two steps in the usual industrial preparation of acrylic acid, the immediate precursor of several useful plastics. in the first step, calcium carbide and water react to form acetylene and calcium hydroxide: cac2 (s) + 2h2o (g) → c2h2 (g) + caoh2 (s) =δh−414.kj in the second step, acetylene, carbon dioxide and water react to form acrylic acid: 6c2h2 (g) + 3co2 (g) + 4h2o (g) → 5ch2chco2h (g) =δh132.kj calculate the net change in enthalpy for the formation of one mole of acrylic acid from calcium carbide, water and carbon dioxide from these reactions. round your answer to the nearest kj .

Answers: 3

Answer

You know the right answer?

Which of the following is true regarding the transition elements?

a. multiple oxidatio...

Questions