What are the two different ions present in the compound Li₃N?

The successive ionization energies of a certain element are:I₁ = 589.5 kJ/mol, I₂ = 1145 kJ/mol, I₃ = 4900 kJ/mol, I₄ = 6500 kJ/mol, I₅ = 8100 kJ/mol.This pattern suggests the element is:

List the number of protons, neutrons, and nucleons, in that order, for ¹⁴C:

Which two electron configurations represent elements with similar chemical properties? (1) 1s² 2s² 2p³(2) 1s² 2s² 2p⁵(3) [Ne] 3s² 3p³(4) [Ar] 4s² 3d¹⁰ 4p⁶

What is the energy of one photon with a wavelength of 0.080 m?

Which of the following is an excited-state configuration for neon?

What is the energy of one photon with a wavelength of 0.500 m?

How many valence electrons does P³⁻ have?

What is the maximum number of electrons that can have: n=5, l=0

Calculate the frequency of light with a wavelength of 650 nm.