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For elements it's the atomic number not the "Period Number." This number tells you how many protons a single atom of that element has in its nucleus.
The "period number" is a dimensionless quantity used in fluid dynamics.
What else can I help you with?
What does the atomic number tell us about an element?
The atomic number is the number of protons in the nucleus.The Atomic Number of an element helps us to locate that particuarler element on the Periodic Table of Elements.
How can you find group no?
The number of valence electrons tell us the group number of that element.
What does the atomic number number tell us about an elements?
The atomic number is the number of protons in the nucleus.The Atomic Number of an element helps us to locate that particuarler element on the Periodic Table of Elements.
What does the number of electrons on the outershell of an atom tell us?
The valence of the element
What does the atomic number tell us about calcium?
Calcium is a metal element. Atomic number of it is 20.
What does the period number tell us about an element?
The period tells us 3 things: # As you go from left to right across each period, the number of protons in the nucleus increases # As you go from left to right across each period, the reactivity of each element decreases (E.g. Sodium is very reactive but argon is very stable as it is a noble gas) ∴ tells us about the reactivity # It tells us the number of shells there are for each element (E.g. Magnesium has 3 shells [2.8.2], ∴it is in the 3rd period)
What does an element's mass number tell us?
An element's mass number tells us the total number of protons and neutrons in its nucleus. It helps to determine the element's atomic mass and differentiate it from other isotopes of the same element.
What information do the periods number give you?
The periods in the periodic table tell you the energy level where the last electrons are being added. So, in period 1, the outermost electrons are in the first energy level or shell. In the 3rd period, the outermost electrons reside the the 3rd energy level, and so on.
What does an element's atomic number tell us?
An element's atomic number tells us the number of protons in an atom of that element. It is used to uniquely identify the element and determine its placement on the periodic table. The atomic number also corresponds to the number of electrons in a neutral atom of that element.
What three things does the atomic number of an element tell us?
It tells us that:How many protons the atom hasHow many electrons the atom has (when it is in non-excited, ground state)It identifies the element itself
What the atomic number tell us?
The atomic number of an atom is the number of protons in the nucleus of an atom. The number of protons determines the identity of an element and its properties. Hope this helps :3
What does the atomic number tell us?
The atomic number tells us the number of protons in the nucleus of an atom. It determines the element's identity and its place on the periodic table. Elements with different atomic numbers have different chemical properties.
