a. <em>Monatomic ions
</em>
Cs is in Group 1. It has <em>one valence electro</em>n that it can lose to form a Cs⁺ ion.
Mg is in Group 2. It has <em>two valence electrons</em> that it can lose to form an Mg²⁺ ion.
N is in Group 15. It can gain <em>three valence electrons</em> to complete its octet and form an N³⁻ ion.
b. <em>Ionic compounds</em>
In an ionic compound there must be the same number of positive and negative charges.
It takes <em>three Na⁺ ions</em> to balance the charge on <em>one N³⁻ ion</em>, so the formula of sodium nitride is Na₃N.
It takes <em>three Mg²⁺ ions</em> (charge = +6) to balance the charge on <em>two N³⁻ ions</em>
(charge = -6), so the formula of magnesium nitride is Mg₃N₂.
Strong electrolytes are completely ionised in solution.
Weak ones are only partially ionised.
Non electrolytes do not form ions
In a chemical reaction equation.. There must be redox reaction taking palce.. So oxidation and reduction reactions will be happening on both sides of the equation.. You can separate the oxidation and reduction equations in halves. . So there will be one half oxidation equation and the other half reduction equation of the reaction.
Answer:
Hydrogen bond strengths range from 4 kJ to 50 kJ per mole of hydrogen bonds. In molecules containing N-H, O-H or F-H bonds, the large difference in electronegativity between the H atom and the N, O or F atom leads to a highly polar covalent bond (i.e., a bond dipole).
Explanation:
Answer:
false
true
true
Explanation:
false - changing the hypothesis to meet your needs is not a good researcher
true - when you can further analyze and explain then you have a successful experiment even if it's not what you expected
true - successful experiments do not end there. they can lead to more in depth questions.