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How many groups and how many periods does the modern periodic table have hydrogen and helium should be counted as the first period.?
The periodic table has 18 groups ant 7 periods. Hydrogen and helium are considered members of the first period.
How are the periods on the periodic table numbered?
The elements are listed in the order of how many atoms they have. For example, hydrogen is the first element on the periodic table. Hydrogen is the smallest element, and has one atom.
What are periods on an periodic table?
hydrogen, helium, lithium, berylium, boron, carbon
How many periods are located on the table?
In Periodic Table are three groups indulging on metals 1. Transition Metals. 2.Pure Metals 'Containing Hydrogen'. 3.Metalliods.
Why is ammonia water is added to hydrogen peroxide?
Ammonia water is added to hydrogen peroxide to stabilize the hydrogen peroxide solution, preventing it from decomposing rapidly. This helps to extend the shelf life of the hydrogen peroxide solution and maintain its potency for longer periods of time.
How many periods a 7 digit number have?
3 periods
How many periods does Californium have?
Californium hasn't "periods" inside.
How many atoms does the hydrogen have?
Three-quarters of the Sun's mass is hydrogen. How many hydrogen atoms are in the Sun?
How many bonds to hydrogen does hydrogen have?
7
How many periods in high school basketball?
there are four periods in basketball
How many periods in field hockey game?
4
How many periods Mendeleev's periodic table contains?
6 periods
