hfrench1556 hfrench1556

27-12-2022
Chemistry

Answered

Chemists can identify the composition of some unknown salts by conducting a flame test. When potassium salts are heated in a flame, a purple color is observed.

This is due to the movement of electrons between energy levels. What is the electron configuration of a potassium atom at ground state?

1s2; 2s2; 2p6; 3s2; 3p6; 4d1
1s2; 2s2; 2p6; 3s2;3p6; 3d1
1s2; 2s2; 2d6; 3s2; 3d6; 4s1
1s2; 2s2; 2p6; 3s2; 3p6; 4s1

Answer :

Other Questions

At 40°c how much potassium nitrate can be dissolved on 300g of water?

The photoelectron spectra for H and He are represented at left. Which of the following statements best accounts for the fact that the peak on the He spectrum is

a photon with a frequency of 3.06 x 1014 hz is emitted during the course of an electron transitioning from an excited state to a ground state. what is the wavel

Complete the following equations (note that the equations are not balanced). Use the activity series if necessary. Na + Cl2 → ? a. NaCl b. NaCl2 c. Na2Cl Mg+ Ca

A student heats a 10 g iron nail (specific heat of 464 j/(kg c) ) with a flame. the nail is then put into 100 g of water at 10 c. the water temperature rose to

Complete each nuclear fusion reaction. 226/88 ra → d/e rn + 4/2 What is D and E 238/92 u → f/g th + 4/2 What is F and G?

a sample of he gas is observed to effuse through a pourous barrier in 8.76 minutes. under the same conditions, the same number of moles of an unknown gas requir

a sample of o3 gas is observed to effuse through a pourous barrier in 8.09 minutes. under the same conditions, the same number of moles of an unknown gas requir

Categorize each hydrocarbon as being saturated or unsaturated. a. 3-methyloctane b. cyclopentene c. propane d. heptyne e. heptane f. propyne

The diagrams above use arrows to represent the speed of a gas particle. Which of the diagrams best represents the speed of the particles of a gas at a fixed tem