first, consider the two elements: Neon and Sodium.
now read about their characteristics.
now read about their characteristics.
Ne has its outside shell full of electrons; therefore, its reaction with other elements is minimal if at all. Na, the next element, has 1 more proton and 1 more electron. More importantly that added electron is in the outside shell. It can fill that shell by ADDing 7 more electrons or LOSing the one electron. Obviously, it loses the one electron and it does so with gusto which makes Na a very reaction element while Ne is not reactive at all. Now follow oobleck's instructions, add what you read to what I've written,then summarize all of it in your own words.
Neon (Ne) has an atomic number of 10, and sodium (Na) has an atomic number of 11. Neon has its outside shell full of electrons; therefore, it does not react with other elements. Sodium has 1 more proton and 1 more electron. That added electron is in the outside shell, making it a valence electron. It can fill that shell by losing the one electron which makes Na a very reactive element while Ne is not reactive.
A. 7
B. 14
C. 15
D. 21
(Answer) the number of protons, electrons and neutrons
(Question) What quality differentiates hydrogen (H) from the other elements in group 1, the alkali metals?
(Answer) It is a non-metal.
(Question) On which atomic property proposed by Henry Moseley is the current periodic table of the elements based?
(Answer) atomic number
(Question) You plan to pass alpha particles through a field that contains a consistent type of particle. Which configuration will result in the largest deflection of alpha particles?
(Answer) low-energy alpha particles passing through a field of high mass-number-particles
(Question) Which statement about metals and nonmetals is correct?
(Answer) Metals can be hammered into thin sheets, and nonmetals are brittle.
(Question) Based on properties of elements in the periodic table, which element is the best conductor of thermal energy?
(Answer) vanadium (V)
(Question) Which element has four valence electrons?
(Answer) silicon (Si)
(Question) Which statement best explains why hydrogen’s atomic number is equal to its mass?
(Answer) Hydrogen does not have any neutrons.
(Question) Which statement correctly compares the valence electrons for atoms of francium (Fr) and barium (Ba)?
(Answer) Francium has fewer valence electrons, but they are in a higher energy level.
(Question) Why are the noble gases the least reactive elements?
(Answer) They have a full valence electron shell.
(Question) Group 2 elements have two valence electrons. Which kind of bond will they most likely form, and why?
(Answer) An ionic bond is likely because they will want to give away two valence electrons in order to become stable.
(Question) How many electrons can carbon accept from other atoms while bonding?
(Answer) four
(Question) An element has six valence electrons. Which ionic charge will its ion carry?
(Answer) 2-
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