Which pair of elements will form a covalent bond?

A. hydrogen and chlorine

B. sodium and chlorine

C. copper and bromine

D. zinc and bromine

How many unshared pairs of electrons are there in a molecule of HCl?

Why is the nitrogen cycle more complicated than the water cycle or the carbon cycle?

A heat releasing process.

Describe how the periodic table differentiates between metals and nonmetals. I need a very informative description/explanation on this.

Homogeneous mixtures have components A. That are usually large enough to be seen with the naked eye B. That are not distributed evenly throughout the mixture C.

How was helium first discovered?

When is alpha particle emission most likely to occur? A. When the nucleus has more than 83 protons. B. When the ratio of neutrons to protons in the nucleus is too high to be stable. C. When the nucleus has a mass of more than 83 amu. D.

Researchers used a combustion method to analyze a compound used as an antiknock additive in gasoline. A 9.394 mg sample of the compound yielded 31.154 mg of carbon dioxide and 7.977 mg of water in the combustion.

The formula for binary ionic compound formed between cesium and fluorine

If the mass of a material is 76 grams and the volume of the material is 16 cm3, what would the density of the material be? g/cm3