Front

What is a carbonate ion?

Back

A carbonate ion is a polyatomic ion with the formula CO3^2-. It consists of one carbon atom covalently bonded to three oxygen atoms.

Front

What is bond order?

Back

Bond order is the number of chemical bonds between a pair of atoms. It indicates the stability of a bond; higher bond order means a stronger bond.

Front

What is the energy of a photon with a wavelength of 562 nm?

Back

The energy of a photon can be calculated using the formula E = hc/λ, where h is Planck's constant and c is the speed of light. For 562 nm, the energy is approximately 3.5 x 10^-19 J.

Front

What is hybridization in chemistry?

Back

Hybridization is the concept of mixing atomic orbitals to form new hybrid orbitals that can form bonds with other atoms.

Front

How many orbitals are created when one 2s orbital and two 2p orbitals hybridize?

Back

Three sp2 hybrid orbitals are created.

Front

What is the hybridization of oxygen in ethanol?

Back

The hybridization of oxygen in ethanol is sp3.

Front

What happens to effective nuclear charge across a period?

Back

Effective nuclear charge increases across a period due to the increase in the number of protons in the nucleus.

Front

What happens to shielding effect down a group?

Back

The shielding effect increases down a group as additional electron shells are added.

Front

What is the formula to calculate the energy of a photon?

Back

E = hc/λ, where E is energy, h is Planck's constant, c is the speed of light, and λ is the wavelength.

Front

What is the significance of bond order in molecular stability?

Back

Higher bond order indicates greater stability of the molecule due to stronger bonds.