The electronic configuration of an element is 1s^2 2s^2 2p^6. Hkw many valence electrons does it have

What are valence electrons (be specific) ?

Why is human skin purple when UV light is shined on it?

How many moles of aluminum oxide can be made if 5.23 mol Al completely react

When you reacted the zinc with the hydrochloric acid, you collected the hydrogen gas by water displacement.

The rate constant for the second-order reaction 2no2 (g) ? 2no (g) o2 (g) is 0.540 / (m · s) at 300°c. how long (in seconds) would it take for the concentration of no2 to decrease from 0.500 m to 0.250 m

A covalent bond is best described as Question 1 options: the sharing of electrons between atoms. the transfer of electrons. a bond between a metal and a nonmetal. a bond between a metal and a polyatomic ion.

From the list below, choose which groups are part of the periodic table

Gypsum is a mineral that is used in the construction industry to make drywall (sheetrock). The chemical formula for this hydrated compound is CaS04 • 2H20. A hydrated compound contains water molecules within its crystalline structure.

What is plasma from which clotting factors have been removed called?

Genetic evidence supports which of the following explanations for the presence of 13 different finch species on the Galápagos Islands? A.