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Metals tend to form cations, or ions with a positive charge. Nonmetals tend to form anions, or ions with a negative charge. Remember that ions form to put the element in noble gas configuration with 8 valence electrons. Elements forming ions will take the most direct addition or subtraction of electrons to achieve this.
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Why do the elements sodium and potassium form ions with the same charge?
Because each of them can form a cation with the electron configuration of a noble gas by donating one electron to another element.
What does percent composition tell you about a molecule?
Percentage composition= (mass of the element/mass of the molecule)*100 The fraction of the molecule's mass that comes from the element's mass
Each element is unique because of what?
The number of protons in the nucleus. This gives the element its elemental number. I.E. Carbon has 6 protons and is element 6.
What does the subscript indicate in the chemical formula?
The number of atoms of that element in the molecule
What is the charge of the nucleus in bromine?
An atomic nucleus is made up of protons and neutrons. Each proton has a charge of +1, whereas neutrons have no charge. Bromine has an atomic number of 35, and a nucleus containing 35 protons, therefore a charge of +35.
Who discovered that each element has a unique positive charge?
Henry Moseley
Is Mercury a diatomic element?
Yes, mercury can be a diatomic element. Mercury is a diatomic element when it is in the form of a mercury(I) ion, or Hg2, when each Hg atom has a 1+ charge, resulting in a total charge of 2+.
What does thorium look like when bonded with another element?
Each chemical compound formed is different !
Which list pairs each element in the periodic table with the correct charge of its ion?
Na:positive Ci:negative
Why is sodium a different element with different properties than magnesium?
Sodium has a charge of +1 in its ionized form while magnesium has a charge of +2 in its ionized form. This is due to the number of protons and electrons in each element. Having a different charge alters the types of reactions and products involved with that element.
What element forms both graphite and diamond?
The element is carbon, and the difference between these two allotropes is the crystal lattice formation that develops in each, based on where each is formed.
How can products of radioactive decay be a different element?
All the atoms of an element have the same number of protons in the nucleus of each atom. When the nucleus of a radioactive element such as Uranium splits into pieces, the "new" atoms formed have smaller numbers of protons in each atom.
How does the presence of a coefficient affect the number of atoms of each type in the formula that the coefficient precedes?
it tells you what charge the element will be
When will diamonds turn back to coal?
Diamonds are formed from the base element carbon, and so is coal. They are only related through their base element, and are not made from each other.
What does an element's atomic number tell about that emelent?
The number of protons in each nucleus of an atom of the element. Also if this element is an atom and not an ion (has no charge) the Atomic number is equal to the number of electrons in its quantum shells
Are there two natural elements that repel each other?
No. However, the protons within the atoms of the element will repel each other because they have equal positive charge.
What list pairs each element in table salt NaCL with the correct charge of its ion?
Na: positive; CL: negative
