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

Which of these events can be caused by an earthquake?

The very common mineral shown in this photograph is commonly a pink - to cream-colored mineral with wavy, light-colored lines. it does not effervesce. what mineral is it?

Which part of a bird's body is least likely to be preserved as a fossil? A. skeleton B. feathers C. skin D. internal organs E. beak

Melting butter is a physical change. Which best describes what is happening? The butter changes into a different substance. The butter contains a new arrangement of atoms. The butter cannot turn into a solid again.

In order to identify a mineral, you must examine just one of its physical properties. True False

What do Lewis dot structures show?

300 grams of a compound which contains only carbon, hydrogen and oxygen is analyzed and found to contain the exact same percentage of carbon as it has oxygen. The percentage of hydrogen is known to be 5.98823%.

What element has the electron arrangement 2,8,4?

If you get pregnant in Dec how long will it take for u to get to second trimester

Name the following compound HClO