Answer:
e. I, At
Explanation:
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In this case, since the periodic trends of a series of elements belonging to the same group towards physical and chemical properties tend to be the same when closer in period, we notice that Mg and Al, Br and Kr and As and Br are close but in period, not in the same group; therefore e. I, At, iodine and astatine, are going to tend to exhibit the greatest similarity in their physical and chemical properties.
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A binary compound is ionic, therefore it could not be A. The answer is aluminium fluoride (D). <span />
Answer:
It will make the soil dry out and lose nutrance, the soil will be unusable in later years. plz give me brainleist
Answer:
reactant + reactant = product + product
Explanation:
(pretend = is the arrow)
the reaction is shown in the equation by modelling how the reactants react with eachother to form the products on the other side of the arrow
Answer:
3.0002 moles
Explanation:
Data Given:
mass of NO₂ = 138.01 g
No. of moles NO₂ = ?
Solution
To find mass of sample mole formula will be used
mole formula
no. of mole = mass in grams / molar mass
Molar mass of NO₂ = 14 + 2(16)
Molar mass of NO₂ = 14 + 32 = 46 g/mol
Put values in above equation
no. of mole = 138.01 g / 46 g/mol
no. of mole = 3.0002 moles
no. of mole of NO₂ = 3.0002 moles
