What is the correct electron configuration for magnesium? (use periodic table)

A) 1s22s22p5

B) 1s22s22p6

C) 1s22s22p63s2

D) 1s22s22p63s23p2

True or False a gas that ignites a glowing splint is oxygen

An aqueous solution has a mass of 490 grams containing 8.5 * 10-3 gram of calcium ions. The concentration of calcium ions in this solution is 1. 4.3 ppm 2. 8.5 ppm 3. 17 ppm 4. 34 ppm

What is the term for a substance that acts on proton donor in one reaction and as a proton acceptor in another?

How could you seperate a mixture of sand and sugar?

Calculate the number of molecules in 6.00 moles H2S?

A 750 mL sample of nitrogen is heated from 30°C to 92 C at constant pressure. What is the final volume?

Write a brief explanation about why a plant extract is a mixture

What is an element that has more valence electrons than fluorine and less energy levels than sodium?

Why can't we breathe in pure oxygen for long

In warm water conditions, female offspring hatch from eggs laid by painted turtles. Male offspring are produced under cold conditions.