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liraira [26]
3 years ago
6

PLEASE HELP why does the atomic radius of elements increases when you go down the Periodic Table

Chemistry
1 answer:
vichka [17]3 years ago
3 0
This is caused by the increase in the number of protons and elections across a period. One proton has a greater effect than one election. Meaning electrons are pulled towards the nucleus, resulting in a smaller radius
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*multiple choice*
galben [10]

1.95  or 2  is the molarity of a 45.3g sample of KNO3 (101g) dissolved in enough water to make a 0.225L solution.

The correct answer is option b

Explanation:

Data given:

mass of KNO_{3} = 45.3 grams

volume = 0.225 litre

molarity =?

atomic mass of KNO3 = 101 grams/mole

molarity is calculated by using the formula:

molarity = \frac{number of moles}{volume of the solution}

first the number of moles present in the given mass is calculated as:

number of moles = \frac{mass}{atomic mass of 1 mole}

number of moles = \frac{45.3}{101}

0.44 moles of KNO3

Putting the values in the equation of molarity:

molarity = \frac{0.44}{0.225}

molarity = 1.95

It can be taken as 2.

The molarity of the potassium nitrate solution is 2.

7 0
2 years ago
The mass in grams of 6.0 mol hydrogen gas (contains h2) is
Flura [38]
Mass = moles x molar mass
so mass of 6 moles of h2 is: 6×1×2 = 12g
4 0
3 years ago
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Where are metals, nonmetals, metalloids, and the noble gases located on the periodic table?
Fofino [41]
Metals are on the left side of the table and nonmetals are on the left with metalloids between them. And the noble gases are all in group 18 of the periodic table.
6 0
3 years ago
Do oxygen atoms become more stable or less stable when oxygen forms compounds? Explain
4vir4ik [10]
They become more stable because they achieve a full outer shell of valence electrons with the magic number of 8.

5 0
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When discussing acids and bases, any substance that accepts a proton, by definition, is considered
enot [183]
Any substance that accept a proton by definition is considered to be BRONSTED LOWRY BASE.
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4 0
3 years ago
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