10 Questions About The Periodic Table

Worksheet 10 questions about the periodic table Kendriya Vidyalaya Tirumalagiri :: 10 Questions About The Periodic Table‚
Kendriya Vidyalaya Tirumalagiri :: - 10 Questions About The Periodic Table
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High school science questions? periodic table? 10 POINTS!?
Umm i need some help we had 4 sheets and i'm stuck on a few questions? 1) LIST THE NOBLE GASES 2) WHAT DOES THE TERM ATOMIC NUMBER MEAN? 3) HOW MANY NATRUALLY OCCURING ELEMENTS ARE THERE? 4) HOW MANY ELEMENTS HAVE BEEN ARTIFICIALLY MADE? 5) WHAT IS THE COMMON FEATURE OF ALL THE ELEMENTS IN THE FIRST COLUMN IN THE PERIODIC TABLE? Please help, i'm not lazy i just dont get this. Thanks! oh and 2 differences between chemical and pysical reactions THANKS CHARLIE :DChemistry periodic table question?
In the Princeton Review for SAT 2 Chemistry, it says: Hydrogen and helium have electrons in the 1st energy shell. Since the 1st energy shell consists of 1 1s orbital, it can hold only 2 electrons, so the third element, lithium, has an electron in the 2nd energy shell, So do BE, B, C, N, O, F, and Ne. These elements make up the 2nd period, and their 2nd energy shells are filled. Third-period elements from sodium to argon fill up 3rd energy shells. Please explain this to mean..I have no idea what it means.Periodic table questions ***10 POINTS best answer :)?
1. Why are alkaline-earth metals less reactive than the alkali metals? (I think I know the answer but I want to double-check) 2. How does electron shielding affect atomic size as you move down a group? Thanks for the responses and answers!Question about periodic table? 10 points.?
okay so I was doing some homework about the unknown 9 elements of Mendeleev but it doesn't make sense. On the chart I have the known elements of Be, i guessed unknown 3 as magnesium since the properties fit with it, then I have Ca, No Sr, and Ba I don't use Ra since I don't use radiactive elements. So five elements should fit but for some reason the table given to me contained blanks and only said 4 go there, same with row 13 says 4 go there although 5 fit, and row 11, 3 fit but there's only room for 2, I don't understand? ThanksAnswer these questions about periodic table?
just fill in the blanks 1. the periodic table is organized by _______ and ________. 5. The properties of elements in a period vary greatly from left to right. Metals usually __________ valence electrons in a chemical reaction. Nonmetals usually ____________ or ______________ valence electrons in a chemical reaction. 8.Which family of elements are non reactive or inert?_____________ 9.Which family of elements reacts with oxygen to form oxides and is used to make paints? 10.Which family of elements reacts readily with medals to form salts? 11.What is the most abundant element on the earth's crust? 12.Which element forms more compounds than any other element? 13. Which family of elements are so soft that they can be cut with a knife? 14.which family of elements are never found free in nature? 15._________is the third most abundant element on the earth and belongs to the ______________ family? 16. Which element is the most active halogen? 17.When were the noble gases discovered? 18.Which group consists of all radioactive elements.

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Published on December 06th, 2018 | Under Worksheet | By Dustin S. Taylor