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Decribe, in terms of electrons ,what happens when a sodium atom reacts with a chlorine atom to form sodium chloride.

This is an example of ionic bonding. The sodium atom loses an electron to become a positive ion . This electron is then gained by the chlorine atom which becomes a negative ion. These two ions then form sodi...
SF
Answered by Seyi F. • Chemistry tutor
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Nitrogen has an atomic number of 7 and mass number of 14, an isotope of nitrogen has a mass number of 17. Explain what an isotope is and state how many electrons, protons and neutrons this isotope has?

An isotope is an derivative of an element that differs from its original type in the number of neutrons it has. N(17) has 7 electrons, 7 protons and 10 neutrons.
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Answered by Michael D. • Chemistry tutor
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Which is more reactive, chlorine or iodine. Explain why. (4 marks)

Chlorine is more reactive.Less shielding - Chlorine has fewer shells so it's outer electron is closer to the nucleus (where as iodine has greater shielding (more shells) so increased distance between the nuc...
ML
Answered by Maya L. • Chemistry tutor
2323 Views

Why does the reactivity of the Group 1 elements increase as you go down the group?

As you descend group 1, there is an increasing number of electron shells, therefore increasing the distance between the positive nucleus and the negative outer electron which decreases the attraction between...
BJ
Answered by Bethan J. • Chemistry tutor
2944 Views

Explain the formation of the ionic compound Calcium Chloride

This is an example of ionic bonding, meaning that the cation (calcium) will lose electrons and the anion (chloride) will gain electrons so all ions will have a full outer shell.Calcium will form a 2+ ion, me...
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Answered by Bethan J. • Chemistry tutor
23632 Views