An electrically neutral atom has the following electron configuration 1s22s22p63s2. what is the name of this atom?

a. oxygen

b. magnesium

c. sodium

d. aluminum

Nitrogen is found in nature as N2, or diatomic nitrogen. One Nitrogen atom typically has 5 valence electrons. When N and N combine to form N2, there is a triple bond that forms.

Which elements would be the equivalent of the noble gases? Express your answers as chemical symbols. Enter your answers in order of increasing atomic number separated by commas.

If an electric mixer does 10,000 joules of work in 10 seconds, what is its power?

Use the periodic table to classify each of the elements below. cadmium (Cd): vanadium (V): xenon (Xe): jodine (1): potassium (K): strontium (Sr) DONE

How many moles are in. 5g of sodium bromide?

When a bond is formed, energy is _ the atoms

Describe 2 theories for yawning

A sample of neon effuses from a container in 76 seconds. the same amount of an unknown noble gas requires 155 seconds. part a identify the gas.

2. The pressure of the oxygen gas inside a canister is 5.00 atm at 25 degrees C. The canister is placed in a freezer. If the temperature falls to - 10 degrees Celsius, what is the new pressure inside the canister? 3,41 atm 12.5 atm 4.41 atm 12.5 atm

How many kilojoules of energy are absorbed when 800.0g of water is heated from 20.0º C to 50.0º C