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
iragen [17]
3 years ago
13

How are the groups titled in the periodic table?

Chemistry
1 answer:
Vika [28.1K]3 years ago
6 0
By the number of Electrons in the valence shell if 1=group 1 if 2 its group 2 and so on Valence means outermost shell
You might be interested in
Arrange the elements in order of increasing atomic radius. Use the periodic table to help you.
Alexandra [31]

Answer:

F, S, Mg, Ba

Explanation:

Fluorine has a small atomic radius. These go up until Ba, which has a larger radius

5 0
3 years ago
Read 2 more answers
What type of bond is between sodium and oxygen​
Greeley [361]

Answer:

Ionic

Explanation:

Sodium is Metal, Oxygen is Non-metal. Non-metals and metals are automatic Ionic bonds

3 0
3 years ago
Read 2 more answers
The half-life of a radioactive isotope is the amount of time it takes for a quantity of that isotope to decay to one half of its
Sedaia [141]

Radio active decay reactions follow first order rate kinetics.

a) The half life and decay constant for radio active decay reactions are related by the equation:

t_{\frac{1}{2}} =\frac{ln 2}{k}

t_{\frac{1}{2}} = \frac{0.693}{k}

Where k is the decay constant

b) Finding out the decay constant for the decay of C-14 isotope:

Decay constant (k) = \frac{0.693}{t_{\frac{1}{2}}}

k = \frac{0.693}{5230 years}

k = 1.325 * 10^{-4} yr^{-1}

c) Finding the age of the sample :

35 % of the radiocarbon is present currently.

The first order rate equation is,

[A] = [A_{0}]e^{-kt}

\frac{[A]}{[A_{0}]} = e^{-kt}

\frac{35}{100} = e^{-(1.325 *10^{-4})t}

ln(0.35) = -(1.325 *10^{-4})(t)

t = 7923 years

Therefore, age of the sample is 7923 years.

3 0
3 years ago
The chemical formula of glucose is C6H12O6, so it is classified as a(n)
julsineya [31]
I think it’s classified as a sugar. The ending -ose usually means a sugar.
6 0
3 years ago
Read 2 more answers
The speed of sound in air is four times as its speed in steel true or false?​
alexgriva [62]

Answer:

.....false

Explanation:

the particles in the air are packed apart whereas the particles in steel are closely packed and sound travel faster in solids than in gasses..

4 0
3 years ago
Read 2 more answers
Other questions:
  • The amount of. moisture in the air is highest when relative humanity is
    14·1 answer
  • How to find density with radius, height, and mass.
    8·1 answer
  • Can u give me them please
    5·1 answer
  • 58.5g of sodium iodide are dissolved in 0.5dm3. what concentration would this be?
    6·1 answer
  • 2. Al reaccionar el sodio con el cloro para formar cloruro de sodio lo hacen siempre
    15·1 answer
  • What is the lightest particle in the following 1)electron 2)proton 3)neutron 4)photon
    12·2 answers
  • Which chemical equation best represents the process of photosynthesis?
    14·2 answers
  • 2H20(g) → 2H2(g) + 02 (8)
    13·1 answer
  • I need help like extremely bad
    11·1 answer
  • Question 1 of 32
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!