Ionic bonds form between.

metals and nonmetals

metals and metals

nonmetals and nonmetals

metals and noble gases

An element x has two naturally occurring isotopes: X-79 (abundance+50.69%, mass + 78.918amu) and X-81 (abundance+49.31% mass+80.917amu). Calculate the weighted atomic mass of X.

Calculate the molecular weight when a gas at 25.0 ∘c and 752 mmhg has a density of 1.053 g/l.

Examine the following equations. A. 23490Th→23491Pa+0-1e+γ B. 60∗27Co→6027Co+γ C. 23490Th→23088Ra+42He D. 146C→147N+0-1e Which equation or equations represent beta decay? C A and D D A and B B A C and D

What period are the following elements in He, Ge, Rb, l

balloon filled with water is places in a microwave until it bursts. Name two different physical changes that occur during this reaction

Do organs of different species resemble each other?

Calculate the mass of grams of 14.79ml of a substance. It'd density is 1.193gml

The molecular weight of NaCl is 58.44 grams/mole. If you had a 1.0 molar solution (1.0 M), you would have to put 58.44 g of salt in 1.0 liter of solution. How many moles of NaCl would you have in 100 mL of this solution

Find an element from the halogen group and noble gases group and tell how it is used in everyday life.

Write the name of the following compound MgSO4 • H20