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
ivolga24 [154]
2 years ago
13

Which sentence about the periodic table of elements is true? *

Chemistry
1 answer:
Ugo [173]2 years ago
5 0
Answer: metals are found on the left side of the periodic table

Justification:

<span>A. All elements in period 2 are metals: FALSE.

The period 2 include metals and no metals: Li and Be are metals, while B is a metaloid, and C, N, O, and F are non-metals

B. All elements in group 18 are metals: FALSE.

The elements in group 18 are known as noble gases: He, Ne, Ar, Kr, Xe, Rn, and Og (recently named). All of them are non-metals.


C. Metals are found on the left side of the periodic table. TRUE.

With exception of H.

Alkalyne metals are the group 1 (Li, Na, K, Rb, Cs, and Fr).

Alkalyne-earth metals are the group 2: Be, Mg, Ca, Sr, Ba, and Ra.

Those two are the groups most to the left.

The non-metals are all on the right side of the periodic table.

D. Metals are found on the right side of the periodic table. FALSE.

According to the previous information.
</span>
You might be interested in
What is the control center or “brain” of a cell called?
aksik [14]

Answer: The nucleus is often referred to as the control center, or brain, of the cell and contains the DNA, or genetic material. The nucleus is surrounded by the nuclear envelope. ... Human cells are eukaryotic cells.

Explanation:

6 0
3 years ago
Read 2 more answers
Acids, when mixed with water, do which of the following... A Taking away protons from the water molecules B Giving away protons
pav-90 [236]

Answer:

Giving away protons to the water molecules

Explanation:

When acids are mixed with water the following reaction takes place:

H^+(aq) + H2O(l) ------> H3O^+(aq)

Hence when acids are added to water, acids donate a proton to water to form the oxonium ion H3O^+ by coordinate covalent bonding. Note that acids contain the hydrogen ion H^+

4 0
3 years ago
Compound that occur widely in glass,
Flura [38]

Answer:

Mostly glass, cement and ceramic are made from sand which comes from silicate .

(Correct me if I am wrong,)

5 0
3 years ago
Read 2 more answers
Initial temperature of metal =
Evgesh-ka [11]

Answer:

the correct answers is 100 22.7 and 24.6

Explanation:

did it on edgunity

4 0
3 years ago
Read 2 more answers
what is an empirical formulaWhat is the percent composition by mass of nitrogen in (NH4)2CO3 (gram-formula mass = 96.0 g/mol)?
Margarita [4]

Answer:

Percentage composition = 14.583%

Explanation:

In chemistry, the emprical formular of a compound is the simplest formular a compound can have. It shows the simplest ratio in which the elements are combined in the compound.

Percentage composition by mass of Nitrogen

Nitrogen = 14g/mol

In one mole of the compound;

Mass of Nitrogen = 1 mol * 14g/mol = 14g

Mass of compound = 1 mol * 96.0 g/mol = 96

Percentage composition of Nitrogen = (Mass of Nitrogen /  Mass of compound) * 100

percentage composition = 14/96   * 100

Percentage composition = 0.14583 * 100

Percentage composition = 14.583%

3 0
3 years ago
Other questions:
  • Liquid octane will react with gaseous oxygen to produce gaseous carbon dioxide and gaseous water . Suppose 10.3 g of octane is m
    6·1 answer
  • A 1.20 g sample of water is injected into an evacuated 5.00 l flask at 65°c. part of the water vaporizes and creates a pressure
    10·1 answer
  • In the periodic table, which elements had complete outer shells? Also include name and symbol
    7·1 answer
  • A student melts 50.0 grams of ice using 16650 J of energy. What is the heat of fusion of ice?
    12·1 answer
  • Given the reaction zn(s) + pb(no3)2 (aq) = pb(s) +zn (no3)2 (aq) the oxidation number of zn metal is
    5·1 answer
  • below are three reactions showing how chlorine from CFCs (chlorofluorocarbons) destroy ozone (O3) in the stratosphere. Ozone blo
    6·1 answer
  • Can you have an ecosystem without plants? EXPLAIN YOUR ANSWER!!
    5·2 answers
  • Which of the following statements is true? Running an electric current through a magnet can create a magnetic field. Electric en
    8·2 answers
  • How do deep currents form ???
    8·1 answer
  • Electrons are shared. Is it Ionic bond, covalent bond or both?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!