What is the phenomenon that occurs when excited gaseous

Assignment Help Chemistry

Reference no: EM13175142

1. What is the phenomenon that occurs when excited gaseous elements emit only a few colored lines?

a. Planck's constant

b. photoelectric effect

c. line spectrum

d. quantum theory

e. electromagnetic spectrum

2. What is the correct electron configuration for beryllium (Be)?

a. 1s22s2

b. 1s22s22p1

c. 1s22s22p2

d. 1s22s22p4

e. 1s22s22p6

3. Which statement regarding the Bohr model of the atom is true?

a. An element produces a continuous spectrum.

b. Electrons lose quantized amounts of energy when moving to the ground state.

c. Electrons cannot be located between energy levels.

d. Light is emitted when an electron moves from the ground state to an excited state.

e. Electrons in the lowest energy level are in an excited state.

4. What is the electron configuration of Br-?

a. 1s22s22p4

b. 1s22s22p6

c. 1s22s22p63s23p63d104s24p6

d. 1s22s22p63s23p63d104s24p5

e. 1s22s22p63s23p63d104s24p4

5. What is the electron configuration of Al3+?

a. 1s22s22p5

b. 1s22s22p4

c. 1s22s22p2

d. 1s22s22p6

e. 1s22s22p63s23p1

6. Which of the following has the largest ionic radius?

a. Li+

b. F-

c. S2-

d. Na+

e. Cl-

7. Which element has the largest first ionization energy?

a. Be

b. Ca

c. Mg

d. Sr

e. Ba

8. Which element has an electron affinity greater than zero?

a. Br

b. I

c. Te

d. As

e. Kr

Reference no: EM13175142

Questions Cloud

What is the molar mass of the solute : a solution is prepared by dissolving 4.21 g of a nonelectrolyte in 50.0 g of water. If the boiling point increases by 0.203 C what is the molar mass of the solute? The boiling point elevation constant for water is 0.512 C/.

Use the oxidation-number method to balance : Use the oxidation-number method to balance the following net ionic redox equation.

Calculate the solubility of this substance per gram of water : A mass of 48.5 g of a certain substance can be dissolved in 29.1 cm3 of water at 20 Degree Celius. Calculate the solubility of this substance per gram of water at the same temperature.

Which would lead to the strongest conjugate base : according to the following pKa values listed for a set of acids, which would lead to the strongest conjugate base?

What is the phenomenon that occurs when excited gaseous : What is the phenomenon that occurs when excited gaseous elements emit only a few colored lines? a. Planck's constant

What is the molar enthalpy of formation of mgcl2 : 5.00g of Mg was reacted completely with Cl2 to form MgCl2 and 63.0kJ of heat was evolved. what is the molar enthalpy of formation of MgCl2?

What are sec financials required to adhere : What are SEC financials required to adhere to be compliant and what additional information is required of SEC registrants that is not required of nonregistrants?

Temperance movements significant personalities and ideas : During the reform movements in American history, discuss the "Temperance movement"s significant personalities and ideas.

What is the molarity of the naoh solution : a 35 mL sample of NaOH solution is titrated to an endpoint by 14.76 mL 0.4122M HBr solutio. what is the molarity of the NaOH solution?

User Account

All Pages