Identify the element with the electron configuration of 1s2 2s2 2p6 3s2 3p3

The diagram shows Niels Bohr's model of an atom. What happens when the electron moves from the first energy level to the second energy level?

Which elements have atoms that are likely to form an anion? Select all that apply. Hint: Review your periodic table. phosphorus (P) chlorine (Cl) magnesium (Mg) selenium (Se)

What are insulated foam cups most likely mode out of? polymyethyene polystyrene nylon thread vulcanized rubber

A sample of hydrogen gas occupies 1.875L at STP, how many moles of gas are present

A series circuit has two 5.0-ohm resistors and a power source of 9.0 volts. How will the current be affected and what will it be if another resistor (with a resistance of 7.5 ohms) is added to the circuit? A. increase; 0.51 amps B. increase; 0.

Which mineral (s) might you be examining if you place some hydrochloric (hcl) acid on a sample and it fizzes?

How many grams of aluminum are required to give a total dislocation length of 3,000 miles (enough to stretch from New York City to Los Angeles assuming you could align all the dislocations into a single line like a string).

Caffeine contains hydrogen, carbon, nitrogen, and oxygen atoms in a fixed ratio.

What type of grass is poisioness

What will happen if there is an insufficient supply of oxygen during the combustion of a hydrocarbon?