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$"Atom W has 9 protons and 9 neutrons, Atom X has 8 protons and 9"$ $"neutrons. Atom Y has 9 protons, and 9 neutrons. Atom Z has 10 protons"$
$"and 10 neutrons."$
What are the isotopes?
And $Z$ defines the identity of the element: $Z=1,H;Z=2,He;..........Z=6,C;........Z=37, Ru...........$ You don't have to remember these numbers, because a Periodic Table will be supplied to you in every test of...
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A carbon-12 atom has 6 protons, 6 neutrons, and 6 electrons. How many protons does a carbon-14 atom have?
carbon-12 and carbon-14 are of the same element, carbon. this means that they have the same number of protons and the same number of electrons - just different numbers of...
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A lithium atom has positively charged protons and negatively charged electrons. The sum of the charges represents the charge of the lithium atom. How do you find the charge of the atom?
For the lithium atom, $Z=3$; there are 3 positive, nuclear charges. There are 3 extra-nuclear electronic charges, i.e. borne by the 3 electrons, in the neutral atom. Lithium generally loses...
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If an atom has an atomic number of 15 and an atomic mass of 31, how many protons, neutrons and electrons does the atom contain?
The for any element is the number of protons in its atomic nuclei. In a neutral atom, the number of electrons are the same as the number of protons. The...
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Consider a hypothetical atom with an atomic number of 4 and a net electronic charge of + 1. It has 4 protons. How many neutrons does this atom have?
$Z", the atomic number"$, is the number of protons, massive positively charged particles present in the nucleus. $Z$ defines the element, and if $Z=4$, the element beryllium is specified. While...
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Sally is making a model of a Mg atom with an atomic mass number of 24. She has balls for the protons, neutrons, and electrons. She has added 6 neutrons to her model. How many more neutrons does she need to add to complete her neutral atom of magnesium?
$Z$, $"the atomic number"$ of magnesium is 12. This means that there are 12 positively charged nuclear particles. This defines the particle as a magnesium atom. To represent the $""^24Mg$...
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An atom of chlorine is represented by $""_17^37 Cl$. How many neutrons are in the nucleus of this atom?
We know that EVERY $Cl$ contains $17$ protons, massive, positively charged nuclear particles. This is what defines it as a chlorine atom (and in fact, given the atomic symbol $Cl$,...
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Boron has two isotopes, boron-10 and boron-11. Boron-10 has five protons and five neutrons. How many protons and neutrons does boron-11 have? Explain.
are given by the name of the element and the . Here boron-11 means the name of the element is boron and the mass number is 11. We are...
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A carbon atom has a mass number of 12. How many protons and how many neutrons does it have?
You specified a carbon atom. By definition, the $C$ atom has 6 protons, 6 positively charged nuclear particles, in its nucleus. You further specified the $""^12C$ isotope. There must be...
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Aluminum has an atomic number of 13. How many protons does an atom of aluminum have? How many electrons does it have?
Aluminum has (by definition) 13 protons, 13 positively charged particles. Because aluminum is neutral (as is all matter), it therefore has 13 negatively charged particles, electrons. Aluminum has an of...
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