Use the periodic to fill in the numbers in the electron configurations shown below. B: 1s2 2sA2pB

A =

B =

1 2 3 4 5 6 7 8 9 10 Time Remaining 35:13 A substance is made up of slow-moving particles that have very little space between them. Based on this information, what can most likely be concluded about this substance?

A magnesium (Mg) atom gives one electron to two atoms of another element, then it takes on a 2 + charge. The two atoms of the other element each form a 1 - charge.

What law is known as the law of action- reaction?

When does thermal energy stop moving

A flexible container at an initial volume of 8.15 L contains 4.51 mol of gas. More gas is then added to the container until it reaches a final volume of 16.9 L.

The enthalpy of formation of MX is ΔHf° = - 525 kJ/mol. The enthalpy of sublimation of M is ΔHsub = 139 kJ/mol. The ionization energy of M is IE = 437 kJ/mol. The electron affinity of X is ΔHEA = - 313 kJ/mol. (Refer to the hint).

Which group of elements could you not use in making fireworks?

A 5.0 M solution of HCL in water has a proton concentration of _M

How many moles are in 25.5 grams of Silver, Ag?

How do nonmetals conduct electricity? well. by giving up electrons. poorly. better than metals.