The <em>effective nuclear charge</em> is the difference between the atomic number an element and the shielding constant. Hence, the atom which experiences the greatest nuclear charge is Sulphur, S.

<u>Calculating the greatest effective nuclear charge</u>, :

$Z_{eff} = Z - S$

Z = Atomic number ; S = shielding constant

<u>For Magnesium, Mg</u>:

Z = 12

S = 10

$Z_{eff} = 12 - 10 = 2$

<u>For Aluminium, Al</u>:

Z = 13

S = 10

$Z_{eff} = 12 - 10 = 3$

For Sulphur, , S:

Z = 16

S = 10

$Z_{eff} = 16 - 10 = 6$

Therefore, the atom whuch experience the greatest $Z_{eff}$ is Sulphur.

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8 0

2 years ago

If a person takes 30 ml of vinegar a day and the molarity of the vinegar is 0. 84 m then how many grams of acetic acid (hc2h3o2

babunello [35]

The mass of the acetic acid is 1.512 g.

<h3 /><h3>What is Molarity?</h3>

molarity is the concentration of a substance in mol per dm³

From the question,

The number of moles contained in the 30 mL vinegar is

n = (0.84×30)/1000
n = 0.0252 mol.

the molar mass of vinegar is calculated below.

m.m of (HC₂H₃O₂) = [1+(12×2)+(1×3)+(16×2)]
m.m = (1+24+3+32]
m.m = 60 g/mol.

To calculate the mass of acetic acid, we use the formula below.

R.m = n×m.m............. Equation 1

Where

R.m = mass of acetic acid.

Substitute these values into equation 1

R.m = (0.0252×60)
R.m = 1.512 g.

Hence, The mass of the acetic acid is 1.512 g.

Learn more about molarity here: brainly.com/question/20383725

8 0

3 years ago