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
skad [1K]
3 years ago
7

Consider the group 1A element sodium (atomic number 11), the group 3A element aluminum (atomic number 13), and the group 7A elem

ent chlorine (atomic number 17). These elements are in period 3. How are the first ionization energies of these elements related? A. sodium > aluminum > chlorine B. sodium < aluminum < chlorine C. sodium < chlorine < aluminum D. sodium > chlorine > aluminum
Chemistry
1 answer:
balandron [24]3 years ago
5 0

B. sodium < aluminum < chlorine

Ionization energies increase from left to right in the Periodic Table.  

These elements are all in Row 3 of the Periodic Table.

Na is furthest left, so it has the lowest ionization energy.

Cl is furthest right, so it has the highestionization energy.

Thus, the order is <em>Na < Al < Cl .</em>

You might be interested in
A 1 liter solution contains 0.304 M acetic acid and 0.228 M sodium acetate. Addition of 0.114 moles of perchloric acid will:____
Papessa [141]

Answer:

Lower the pH slightly

Explanation:

A buffer is defined as the mixture between weak acid and conjugate base. In the problem, acetic acid is the weak acid and sodium acetate the conjugate base.

When a strong acid as perchloric acid is added to a buffer, <em>the pH decreases slightly</em> because the acid reacts with conjugate base producing weak acid and not affecting directly the concentration of H⁺ ions.

5 0
3 years ago
20. 6th-grade question
Yuki888 [10]

Answer:

D. visible light and the electromagnetic spectrum

have a small area of overlap.

Explanation:

you have to look careful in answering questions you could end up right or wrong, on these answers are very important to know, and I am always right with these answer's

7 0
3 years ago
Celery stalks that are immersed in fresh water for several hours become stiff and hard. similar stalks left in asalt solution be
galina1969 [7]
Plasmolysed because of osmosis as the salt solution has lower water potential than the cells of the stalk
4 0
3 years ago
What does percent composition tell you about a substance?
beks73 [17]

Answer:

Percent composition tells you which types of atoms (elements) are present in a molecule and their levels. Percent composition can also tell you about the different elements present in an ionic compound as well.

8 0
3 years ago
8 billion molecules of O2 gas
bixtya [17]
What do u want to solve?
6 0
4 years ago
Other questions:
  • At which point could the substance shown exist as a gas or a solid but not a liquid?
    5·2 answers
  • The repeating subunits that are responsible for the shape of a crystal are known as
    11·2 answers
  • A displacement reaction takes place when calcium is placed in a solution of zinc chloride. Which substances will most likely be
    5·1 answer
  • On another planet, the isotopes of titanium have the following natural abundances.
    7·1 answer
  • Which supports the idea that birds and butterflies both have wings but they do not have a common ancestor with wings?
    14·2 answers
  • If a sample of oxygen occupies a volume of 85.0 L at a pressure of 67.4 kPa and a temperature of 245K , what volume would the ga
    11·1 answer
  • Which of the following microorganisms is most likely to get its main source of nutrition from a host?
    8·2 answers
  • C. If 71.2 grams of Beryllium Chloride is reacted with 161 grams of
    9·1 answer
  • How many grams of MgCl2 would be needed to make 5.3 liters of a 0.25 molar solution? Round your answer to the nearest 0.01,
    9·1 answer
  • NEED HELP ASAP!<br> What makes Carbon-14 so useful in “carbon dating” or “radiodating”?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!