Which of the following is the electron configuration for an electrically neutral atom of beryllium (Be) ?

1s^2 2s^2

1s2^2s2^2p^6

1s^22s^22p^4

1s^22s^22p^44d^2

What are 3 things an Apple, Knife and Mirror have in common?

As you go left to right on the periodic table, the trend for atomic radius is to increase. True False

The pressure of a sample of a gas of constant volume 2.0 atm at 30 C. What is the pressure of the sample at 20

Why has Earth's climate changed so rapidly in recent years? (a) The sun has gotten much hotter. (b) People are eating too many plants. (c) People are burning too many fossil fuels. (D) The Earth is rotating too slowly to cool off effectively

Fe2o3 (s) + 3h2 (g) →2fe (s) + 3h2o (l) Calculate the mass of H2O

Mass_mole relationship

What is the momentum of an 800-kg car | traveling at a velocity of 10 m/s? What is its momentum if it speeds up to 50 m/s?

How many grams of CuSO4 are there in 100.0 g of hydrate? How many moles?

Which student is determining the atomic mass of sodium?

Ionic compounds can conduct electricity when dissolved in water or melted, because a. the ions are free to move. b. they have no ions to contribute to the solution. c. the ions are fixed in place. d. they have shared electrons.