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
aleksley [76]
3 years ago
11

A new element is discovered which has the following ionization energies: IE1 127 kJ/mol IE2 287 kJ/mol IE3 625 kJ/mol IE4 2651 k

J/mol IE5 3540 kJ/mol Which group do you suppose this new element belongs in
Chemistry
1 answer:
Eddi Din [679]3 years ago
3 0

Answer:

This hypothetical element is likely to be found in IUPAC group 3 (or IIIA in the previous version of the IUPAC system.)

Explanation:

Note the trend in the consecutive ionization energies of this element. The first three ionization energies are relatively small (under \rm 1000\; kJ \cdot mol^{-1}) while ionization energies after the third are much larger.

The main energy levels are likely responsible for this trend. The first three electrons are in the valence shell. They have the greatest distance from the nucleus, which means that the nucleus has the weakest hold on them. Besides, there's the shielding effect: inner-shell electrons push these valence electrons away from the nucleus. That further reduces the amount of energy it takes to remove the first three electrons and "ionize" the atom.

In comparison, inner shell electrons are much harder to remove. That explains the jump in the ionization energy trend.

In a modern IUPAC periodic table, the group number of an element is the same as the number of valence electrons in its atom. Based on the trend in ionization energy, there are three valence electrons in each atom of this hypothetical element. As a result, the IUPAC group number of this hypothetical element would be 3. That's the same as IIIA in the previous version of the IUPAC system.

You might be interested in
Attempt 3 An irregular lump of an unknown metal has a measured density of 5.50 g/mL. The metal is heated to a temperature of 153
shepuryov [24]

Answer:

i think it's 20.0mL

Explanation:

i learned this question in class

4 0
3 years ago
I have no idea on how to do this here is the question (For the following pairs of atoms, show how they transfer valence electron
Maru [420]

Answer:

uhh

Explanation:

i hope you find this answer

3 0
3 years ago
How can pH go high over time
Natali5045456 [20]

Factors that raise pH in a swimming pool. 1. Natural pH Rise: Carbon Dioxide Loss. The chemistry of pH sounds a lot more complicated than it is. In short, the less CO 2 in solution, the ... 2. Sanitizers and their pH Impact. 3. pH and alkalinity adjustment chemicals.

4 0
4 years ago
Read 2 more answers
Calculate δs∘rxn for the reaction2no(g) o2(g)→2no2(g)express your answer to one decimal place and include the appropriate units
Anna35 [415]

The δs∘rxn  for the reaction 2NO(g) + O_{2} → 2NO_{2} (g) will be -146 J/K.

Entropy would be a measurable physical characteristic and a scientific notion that is frequently connected to a condition of disorder, unpredictability, or uncertainty.

Entropy would be a measurement of the system's unpredictability or disorder. The entropy increases as randomness do. It has broad properties as well as a state function. It has the unit JK^{-1} mol^{-1}.

Entropy of the reaction can be calculated by the reaction.

ΔS^{0} rxn = 2 mol × S^{0} (NO_{2} (g) - 2 mol × S^{0} NO (g) - 1 mol × S^{0} (O_{2} )

ΔS^{0} rxn  = 2 mol × 240 J/mol.K - 2 mol × 210 J/mol.K-1 mol  ×205.2 J/mol.K

ΔS^{0} rxn  = -146.8 J/K

Therefore, the δs∘rxn  for the reaction 2NO(g) + O_{2} → 2NO_{2} (g) will be -146 J/K.

To know more about reaction

brainly.com/question/20305735

#SPJ4

4 0
1 year ago
Water has a higher boiling point than expected because
Nadya [2.5K]
Evaporation occurs when water molecules on the surface gain enough energy to enter the atmosphere. However, stronger intermolecular forces between water molecules cause them to be strongly attracted to each other and to tend to stay in the liquid phase. When the temperature is raised (when heat is applied), more molecules gain the energy needed to escape these intermolecular forces and go into the vapor phase.
Therefore the best answer is D.

3 0
3 years ago
Read 2 more answers
Other questions:
  • What specimen number shows spider eyes?
    5·1 answer
  • I have a problem of eating to much chods,what can help me stop?
    9·1 answer
  • The periodic table of elements is organized by the number of
    15·1 answer
  • Which is the next logical step in balancing the given equation?
    5·2 answers
  • The procedure for an experiment is _____.
    8·2 answers
  • (90 PTS) PLS HELP ME!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!What type of environment do sedimentary rocks form in? Wher
    12·2 answers
  • ESCOJA UNA DE LAS CULTURAS ESTUDIADAS Y SELECCIONE UNA POSICIÓN SOCIAL DENTRO DE LA CULTURA (RELIGIOSA, GOBERNADOR LOCAL, ETC.)
    12·1 answer
  • Please help me find the answer , thank you.
    13·1 answer
  • When fluorine gas is put into contact with calcium metal at high temperatures, calcium fluoride powder is created in an exotherm
    12·1 answer
  • If 0. 5371 g of zn was plated onto an electrode, how much charge (in coulombs) was used to reduce the zn2+ to zn(s)?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!