Which element has the same number of energy levels as krypton (Kr) and the same number of valence electrons as nitrogen (N) ?

My answer is arsenic (As) is that right?

How might a human muscle protein molecule differ from a cow muscle protein molecule?

Which curve represents the spontaneous reaction, and which the nonspontaneous?

An element has 8 protons and 8 neutrons in its nucleus what is the atomic and mass number

An atom has six electrons in its valence shell. how many single covalent bonds would you expect it to form in most circumstances?

Charlie is drinking a cup of soup which has a pH of 8. Jack is drinking a cup of orange juice with a pH of 6. which item has more free H + ions? Approximately how many more H + ions does the drink with more have?

A rigid cylinder with a movable piston contains a 2.0-liter sample of neon gas at STP. What is the volume of this sample when it's temperature is increased to 30 degrees Celsius while its pressure is decreased to 90 kilopascal

Write a speech aimed at year 7 to explain why some metals lose their shine over time but gold does not.

How many moles of co2 could fit in a 475 ml bag at - 22c and 1.125 atm?

How mant atoms are in 3N2

The type of nuclear decay an unstable nucleus will undergo depends on its ratio of neutrons to protons. The radioisotope cobalt-65 has a ratio of neutrons to protons of 1.41, which is too high for a nucleus of this size.