1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
umka2103 [35]
4 years ago
14

In the third period of the periodic table sodium is followed by magnesium aluminum silicon and phosphorus which of these element

s has the smallest atomic size ?
Chemistry
1 answer:
wariber [46]4 years ago
6 0
Answer:
            Phosphorous has the smallest atomic size.

Explanation:
                   As we know these elements belong to same period means there valence shell is the same. So moving from left to right along the period the shell number remains constant but the number of protons and electrons increases. So, due to increase in number of protons the nuclear charge increases hence attracts the valence electrons more effectively resulting in the decrease of atomic size.

Elements and their atomic radius are as follow,

<span><span>Magnesium          0.160 nm
</span><span>
Aluminium           0.130 nm
</span><span>
Silicon                  0.118 nm
</span><span>
Phosphorus         <span>0.110 nm</span></span></span>
You might be interested in
What happens to the female sex cell that has left the ovary if it isn't fertilised
LekaFEV [45]
It leaves the body in the form of blood during the menstrual cycle following normal circumstances of course
8 0
3 years ago
You burn a 15g jellybean to warm 50 mL of water, which increases the temperature of the water 25 °C. How many calories of heat a
Juli2301 [7.4K]

Answer:

Q = 375\,cal

Explanation:

The quantity of heat transfered from the jellybean to the water is:

Q = \rho\cdot V \cdot c\cdot \Delta T

Q = \left(1\,\frac{g}{cm^{3}}\right)\cdot (15\,cm^{3})\cdot \left(1\,\frac{cal}{g\cdot ^{\circ} C} \right)\cdot (25\,^{\circ}C )

Q = 375\,cal

7 0
3 years ago
Read 2 more answers
A sample of a compound consisting only of copper and sulfur contains 88.39g of the metal and 44.61g of non-metal. How many grams
Lorico [155]
<span>(88.39 / (88.39 + 44.61) ) x (5264000) = answer for copper grams 

(44.61 / (88.39 + 44.61)) x (5264000) = answer for sulfur grams 

Sulfur is a non-metal used to make paper, number 16 on periodic table.</span><span>

</span>
6 0
4 years ago
Why does electronegativity decrease from right to left within a period?
Firlakuza [10]

Explanation:

so, as you move down a group on the periodic table, the electronegativity of an element decreases because the increased number of energy levels puts the outer electrons very far away from the pull of the nucleus. electronegativity increases as you move from left to right across a period on the periodic table.

4 0
3 years ago
What would the expected temperature change be (in Fahrenheit) ida 0.5 gran sample of water released 50.1 J of heat energy? The s
Mariana [72]
<h3>Answer:</h3>

23.95 °C

<h3>Explanation:</h3>

We are given;

  • Mass of the sample is 0.5 gram
  • Quantity of heat released as 50.1 Joules
  • Specific heat capacity is 4.184 J/g°C

We are required to calculate the change in temperature;

  • Quantity of heat absorbed is given by the formula;
  • Q = mass × specific heat capacity × Change in temperature

That is, Q = mcΔT

Rearranging the formula;

ΔT = Q ÷ mc

Therefore;

ΔT = 50.1 J ÷ (0.5 g × 4.184 J/g°C)

    = 23.95 °C

Therefore, the expected change in temperature is 23.95 °C

4 0
4 years ago
Other questions:
  • Calculate the oxidation number of s in S2O8^2-​
    7·1 answer
  • Describe three different scenarios where a chemical process or reaction shows an increase in entropy.
    9·1 answer
  • What is the mole fraction, x, of solute and the molality for an aqueous solution that is 16.0 % NaOH by mass
    13·1 answer
  • Help which one is correct
    8·1 answer
  • Spongebob was trying to make Krabby Patties that weighed 12oz. He made 4 Krabby Patties. They all had the following weights: 12.
    5·1 answer
  • Why is salt an ionic bond? Why is salt an ionic bond?
    15·1 answer
  • A5 gram ball has a volume of 2.5 milliliters. What is the density of the ball?
    8·1 answer
  • Can someone help me with this question
    10·1 answer
  • The table shows data about abiotic factors of streams in two different watersheds.
    12·1 answer
  • A compound contains 78.14% B and 21.86% H by mass and has a molar mass of 27.67 g/mol. What is the molecular formula of the comp
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!