The atomic number of an element is 29. What is the electron configuration of this element? A) 1s2,2s2,2p6,3s2,3p6,3d9,4s2 B) 1s2,2s2,2p6,3s2,3p6,4s1,4d10 C) 1s2,2s2,2p6,3s2,3p6,4s1,3d10 D) 1s2,2s2,2p6,3s2,3p6,4s1,3d9, 4p^1

Acylinder is filled with 2.00 moles of nitrogen, 3.00 moles of argon and 5.00 moles of helium. if the gas mixture is at stp, what is the partial pressure of the argon

Suppose you have designed a new thermometer called the x thermometer. on the x scale the boiling point of water is 129 ? x and the freezing point of water is 13 ? x. part a at what temperature are the readings on the fahrenheit and x thermometers the same?

The table lists the lattice energies of some compounds.compoundlattice energy (kj/mol)lif            –1,036licl            –853naf            –923kf            –821nacl            –786which statement about crystal lattice energy is  best  supported by the information in the table? the lattice energy increases as cations get smaller, as shown by lif and kf.the lattice energy increases as the cations get larger, as shown by lif and licl.the lattice energy decreases as cations get smaller, as shown by nacl and naf.the lattice energy decreases as the cations get smaller, as shown by naf and kf.