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
Contact [7]
3 years ago
14

Which of the following elements have properties similar to those of astatine?

Chemistry
2 answers:
Jobisdone [24]3 years ago
5 0

Answer:

F, Br, l

Explanation:

Astatine is radioactive element which has symbol, At and the atomic number of the element is 85.

It belongs to the group 17 and period 6.

The elements in the same group shows similar properties as they have same general electronic configuration.

So, it shows similar properties with group 17 elements which are - F, Cl , Br, l

<u>Answer- A</u>

vekshin13 years ago
3 0
<h3><u>Answer;</u></h3>

F, Br, l

<h3><u>Explanation;</u></h3>
  • Astatine is a member of the halogen family, elements in Group 17 (VIIA) of the periodic table.
  • It is a highly radioactive element and it is the heaviest known halogen. Astatine is similar to the elements above it in Group 17 (VIIA) of the periodic table, especially iodine.
  • One property of iodine is that it tends to collect in the thyroid gland .
You might be interested in
As with other ionic compounds, potassium bromate, KBrO3, dissociates into ions when it dissolves in water. If 13.8 g of KBrO3 is
chubhunter [2.5K]

Answer:

ΔH of dissociation is 38,0 kJ/mol

Explanation:

The dissociation reaction of KBrO₃ is:

<em>KBrO₃ → K⁺ + BrO₃⁻ </em>

This dissolution consume heat that is evidenced with the decrease in water temperature.

The heat consumed is:

q = CΔTm

Where C is specific heat of water (4,186 J/mol°C)

ΔT is the temperature changing (18,0°C - 13,0°C = 5,0°C)

And m is mass of water (150,0 mL ≈ 150,0 g)

Replacing, heat consumed is:

q = 3139,5 J ≡ 3,14 kJ

13,8 g of KBrO₃ are:

13,8 g×(1mol/167g) = 0,0826 moles

Thus, ΔH of dissociation is:

3,14kJ / 0,0826mol = <em>38,0 kJ/mol</em>

<em></em>

I hope it helps!

3 0
3 years ago
What is the hyphen notation of nitrogen
vovikov84 [41]
<span> N-16

</span>7 protons & 9 neutrons
<span>7 + 9 = 16

</span>
6 0
3 years ago
Why do you think different liquids have different freezing points
Ganezh [65]
I think that different liquids have different freezing points because every liquid consists of different atoms and different things that make up the atom causing them to have different freezing points.
5 0
3 years ago
If a substance is not able to be separated by physical means but is able to be separated by chemical means, it is a(n)
fenix001 [56]
A compound is a substance that consists of 2 or more elements chemically combined in a fixed proportion.

Compounds can be broken down ijt0 simple substances by chemical means but, elements cannot.
4 0
3 years ago
Identifying polar regions within molecules is a very useful skill for chemists that helps us to think about the strength of inte
Ilia_Sergeevich [38]
 bond in the acetic acid molecule is the most polar <span>c. c=o bond
</span>which bond in the methyl amine molecule is the most polar <span>c. n–h bond</span>
4 0
3 years ago
Other questions:
  • Which statement best describes chemical properties of matter? Chemical properties, such as density, must be observed when a subs
    5·2 answers
  • Which statement correctly describes protons? They have no charge and are present in the nucleus of an atom. They have a negative
    14·2 answers
  • Show that the Joule-Thompson Coefficient is zero for ideal gas.
    11·1 answer
  • When objects move farther apart from one another, the gravitational force
    11·1 answer
  • The concentration of ozone in ground-level air can be determined by allowing the gas to react with an aqueous solution of potass
    9·1 answer
  • 10 divided by 2 im confused
    10·2 answers
  • PLS HELP OUTTTT PLSSSS . What seismic graph used for?"
    15·1 answer
  • The part in the middle with a coil of wire wrapped around a metal shaft is part of an electric motor. What is it?
    10·2 answers
  • Blonde hair is a dominant trait. (True or flase)​
    11·2 answers
  • Which element in the list is the most reactive?<br><br> C<br><br> Ba<br><br> S<br><br> Cs
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!