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
slamgirl [31]
3 years ago
6

Which of the following trends is indirectly proportional to effective nuclear charge, Zeff

Chemistry
2 answers:
Julli [10]3 years ago
7 0

Answer : Option C) Atomic Size

Explanation : The atomic radius of the elements is found to be decreasing if we go from left to right in the modern periodic table. Accordingly, Z_{eff} increases as the number of shielding electrons present in the atomic nucleus of the periodic elements which lies in the same row remains constant while the number of protons in each atomic shell increases.

The effective nuclear charge Z_{eff} of an atom is defined as the net positive charge which is felt by the valence electron of the atomic element.

When Z_{eff} is observed to decrease, it is seen that the atomic radius grows in size. So, it explains the inverse relationship between both. This phenomenon occurs, because there is more screening of the electrons from the nucleus taking place, which is observed due to decrease the attraction between the electron and the nucleus.

ra1l [238]3 years ago
3 0

Periodic trends provides information about an element’s properties. One major trends in the periodic table is the atomic size, which is indirectly proportional to effective nuclear charge. The atomic size gradually decreases from left to right across a periodic table because all electrons are added to the same shell. At the same time, protons are also added to the nucleus, making it more positively charged.

Due to this, there is a greater nuclear attraction; the effect of increasing proton number is greater than that of the increasing electron number, which means that there is a strong attraction of nucleus manifested by pulling the atom's shell closer to the nucleus. Then, the valence electrons are seized closer towards the nucleus of the atom, which resulted to the decrease in atomic radius.

 


You might be interested in
WHAT MEASURING EQUIPMENT DID LEANNE USE TO GET HER RESULTS
julia-pushkina [17]

Answer:

Thietbi  od

Explanation:

7 0
3 years ago
Read 2 more answers
Which metal can be used as a sacrificial electrode to prevent the rusting of an iron pipe?
Pepsi [2]

manganese The metal that is used as a sacrificial electrode to prevent the rusting of iron is manganese.

8 0
3 years ago
Plz help me in this <br> Question (i) and (ii) and (iii)
gregori [183]

The answer is given below....

Hope it helps

7 0
3 years ago
I'm not 100% sure of the answer. Explanations are highly appreciated.
PolarNik [594]

Answer:

The correct answer is

B.

\Delta H=2(1072)+498 -4(799)

Explanation:

Enthalpy of reaction :

It is the amount of energy released/absorbed when one mole of the substance is formed from the reactant at a constant pressure.

The enthalpy of a reaction can be calculated using :

\Delta H=\Delta H_{reactants}-\Delta H_{products}

2CO+O_{2}\rightarrow 2CO_{2}

\Delta H_{reactants}=2(C\equiv O)+O=O

\Delta H_{reactants}=2(1072)+498

H_{products}=2(2\times C=O)

H_{products}=4\times 799

\Delta H=\Delta H_{reactants}-\Delta H_{products}

\Delta H=2(1072)+498 -4(799)

units = \frac{kJ}{mole}

Please note that :

The carbon monoxide , CO should be taken as C triple bond O. Not C=O .

So , the bond energy =1072 is used

\Delta H=2(1072)+498 -4(799)

8 0
3 years ago
Is alcohol a pure substance or a mixture
Genrish500 [490]
Alcohol is a pure substance
3 0
3 years ago
Read 2 more answers
Other questions:
  • If an object loses mass, what will happen to its weight?
    13·2 answers
  • The solubility of kcl in ethanol is 0.25 g / 100 ml at 25 oc. how does this compare to the solubility of kcl in water?
    6·1 answer
  • Is blood an element or compound?
    14·1 answer
  • Based on the knowledge about genetic links between organisms, which category of classification was added to Linnaean Taxonomy?
    12·2 answers
  • A precipitate forms when mixing solutions of sodium fluoride (NaF) and lead II nitrate (Pb(NO3)2). Complete and balance the net
    13·1 answer
  • Find the area of a circle inscribed in an equilateral triangle of side 18 cm. ( Take pi= 3.14).​ answer should be 54.78 cm²
    8·1 answer
  • Please help me with my chemistry
    14·2 answers
  • The Balmer series consists of the spectral lines from hydrogen for an electron making a transition from an excited state to the
    11·1 answer
  • What does it mean to have a control group
    8·2 answers
  • Describe the concentration of hydronium ions and hydroxide ions when a base is added slowly to a white vinegar solution. The pH
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!