Chemistry, 27.03.2020 19:32 carrot123

Cual es la razón de que la molécula de oxigeno de calcio sea caO y no sea ca2O. o caO 2

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Answer from: lilisncz

In calcium oxide (CaO), oxygen and calcium are respectively a non-metal and a metal, whose bonding is based on the exchange of electrons to form an ionic bond, which balances their charges and makes it chemically stable.

Explanation:

What is the reason that in the calcium oxide molecule is caO and not Ca₂O or CaO₂?

Calcium is a metallic element -a soft metal- that is capable of bonding with a non-metallic element such as oxygen to form an ionic bond, so that each Ca atom will bond to a single O atom.

CaO (calcium oxide)

Ca Z = 20 O Z = 8

Ca + O ---→ Ca⁺² + O ⁻²

K L M N K L K L M K L

2 8 8 2 2 6 2 8 8 2 8

The electron exchange that is observed occurs between +atom and atom, and for this reason the chemical formula of calcium oxide is CaO.

Calcium oxide (lime) is obtained by heating calcium carbonate (CaCO₃) to very high temperatures through the following reaction

CaCO₃ + heat → CaO + CO₂

Answer from: Quest

Read the sentences below in 1962, i tried to enroll as the first black student at the university of mississippi. the governor of mississippi blocked my entrance which best describes the verbs used in the sentences? o they are past tense verbs, which are often used in narrative essays o they are past tense verbs, which are not often used in narrative essays. o they are future tense verbs, which are often used in narrative essays o they are future tense verbs, which are not often used in narrative essays.

Answer from: Quest

1. a)c-14 has two more protons

2. d)they have different numbers of protons, neutrons, and valence electrons; they are all gases at room temperature.

3. c) iron and nickel.

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Cual es la razón de que la molécula de oxigeno de calcio sea caO y no sea ca2O. o caO 2...

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