Answer: copper I ion has a completely filed d-orbital.
Explanation:
The electron configuration of copper is
29Cu-[Ar] 3d10 4s1
The formation of Cu+ involves the loss of one 4s electron leaving a completely filled d subshell. Colour in transition metal complexes is generally attributed mostly to d-d transition. When bonded to ligands, the d-orbitals are no longer degenerate. They split into sets of orbitals depending on the nature of the crystal field. d-d transition is not possible when the d-orbitals are full hence Cu+ compounds are not coloured.
Answer: is equal to
Explanation: According to law of conservation of mass, the mass can neither be created nor be destroyed. Thus the mass of products must be equal to the mass of reactants.
In order to have same mass on both sides of the chemical equation, the number of atoms of each element must be same in reactants as well as products.
Answer:
Explanation:
Molecular weight is the mass of substance containing 1 Avogadro's Number of particles which is 6.023 x 10²³ particles. Such is calculated by adding the formula weights of all elements in the compound of interest. For Pb(NO₃)₂ the molecular weight is 1Pb + 2N + 6O = 1(207g/mol) + 2(14g/mol) + 6(16g/mol) = 331g/mol.
For the problem, it is asking for the number of moles Pb(NO₃)₂ in the given mass of 170g of the substance. Such is calculated by dividing the given mass (170g) by molecular weight (331g/mol).
moles of Pb(NO₃)₂ in 170g = given mass (170g)/molecular weight (331g/mol) = 0.51 mole of Pb(NO₃)₂.
Answer:
The difference between a cation and an anion is the net electrical charge of the ion. Ions are atoms or molecules which have gained or lost one or more valencee electron giving the ion a net positive or negative charge. Cations are ions with a net positive charge.
Explanation:
Answer:
Radiation is the transfer of heat between objects which are not touching. I think
Explanation: