The election configuration has of an element is 1s^2 2s^2 2p^1. How many valence electrons does the element have?

If the absorbance of the 10μM solution is 0.24, what should be the absorbance of the 50μM? Write answer to two decimal places.

What term is used to describe a perfect radiator and absorber of electromagnetic radiation?

How many, and what color, photons are released when a single electron is fired at a single neon atom

Which best describes the motion of pentane molecules in liquid phase?

Which factor distinguishes a metallic bond from an ionic bond or a covalent bond? a. the mobility of protons b. the equal sharing of electrons c. the unequal sharing of electrons d. the mobility of electrons

Since particles in a solid are arranged close together in a regular pattern, some can be classified as i think magma not 100% sure A. gradients. B. crystals. C. plasma. D. magma.

Two examples of common items that use chemical change

Give two sources of energy that can cause ocean waves

Chromium, calcium, and potassium are near each other on the periodic table and have some common characteristics but differ in chemical reactivity.

Which is true of transition metals when moving from left to right on the periodic table? The d sublevels are not filled across the period. The cation radii become larger across the period. Atomic radii increase slightly and then start to decrease.