Calcium chloride contains only calcium and chloride. what is the formula for this compound? (you will need the periodic table for this question to determine the groups of these elements and, thus, determine their ionization. you might also choose to access the video for the periodic table of the elements in the introduction to this question.) express your answer as a chemical formula.

Explanation:

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Calcium is alkaline-earth metal located at the group IIA, which means that gains two electrons when bonded with another element, thus, its oxidation state is +2. However, the halogen (group VIIA element) chlorine in the form of chloride ions loses one electron, hence is oxidation state is -1. In such a way, when they gather in one compound, the resulting formula turn out into:

Which accounts for calcium chloride.

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the equation that correctly represent the reaction for formation of ammonia is

n2+ 3h2 → 2nh3 (answer d)

1 mole of nitrogen gas (n2) react with 3 moles of hydrogen gas (h2) to form 2 moles of ammonia ( nh3). this is in a process known as haber process were iron is used as a catalyst and reaction take place that a higher temperature and pressure. the process is exothermic hence energy is released.

particle   p is an electron and particle q is a neutron