Please help if you can... 10 points to the first right answers
2007-10-04 11:28:15 · 11 answers · asked by MsHunny 3 in Science & Mathematics ➔ Chemistry
The number of protons, I believe.
2007-10-04 11:31:24 · answer #1 · answered by anonymous 3 · 0⤊ 0⤋
An element is defined by the number of protons in the nucleus. This is the atomic number of the element on the periodic chart.
Example:
7 protons in the nucleus = an atom of nitrogen
8 protons in the nucleus = an atom of oxygen
18 protons in the nucleus = an atom of argon
19 protons in the nucleus = an atom of potassium
20 protons in the nucleus = an atom of calcium
2007-10-04 20:35:29 · answer #2 · answered by Kman 6 · 0⤊ 0⤋
An element is defined by its Atomic number, the number of protons.
2007-10-04 18:32:00 · answer #3 · answered by science teacher 7 · 0⤊ 0⤋
Its Atomic number (in the case of oxygen = 8)
2007-10-04 18:31:17 · answer #4 · answered by CHESSLARUS 7 · 0⤊ 0⤋
Atomic Number?
2007-10-04 18:31:41 · answer #5 · answered by rushr 3 · 0⤊ 0⤋
a nonmetallic bivalent element that is normally a colorless odorless tasteless nonflammable diatomic gas; constitutes 21 percent of the atmosphere by volume; the most abundant element in the earth's crust
2007-10-04 18:33:06 · answer #6 · answered by qtpie9374 2 · 0⤊ 0⤋
atomic number(the easiest way), electronic configuration and its chemical properties
it can also be defined by its atomic mass at times, but you shouldnt count on that since it has isotopes...
2007-10-04 18:35:07 · answer #7 · answered by Aditi 2 · 0⤊ 0⤋
The number of protons and electrons it has?
Its purity?
2007-10-04 18:31:51 · answer #8 · answered by hottotrot1_usa 7 · 0⤊ 0⤋
The number of electrons, it's reactivity, if it's a noble gas or not, etc.
2007-10-04 18:31:13 · answer #9 · answered by Norm 3 · 0⤊ 0⤋
Number of its electronegativity, can be defined by its polarity, it can be defined by its structure e.t.c
2007-10-04 19:14:18 · answer #10 · answered by tosinjesu 1 · 0⤊ 0⤋