Ask question

Ask question

All categories

4 years ago

5

Which of the following elements has the smallest atomic radius

1 answer:

babunello [35]4 years ago

3 0

Answer:

Element with the smallest radius is Carbon.

Explanation:

In a periodic table, atomic radius increases down the group due to addition of a new shell and decreases across the period from left to right due to increasing nuclear charge.

Due to addition of more electrons in same shell and increase of positive charge in nucleus increases attractive forces between electrons and nucleus hence decreasing size.

Carbon and Lithium are present in same period and hence Carbon has smaller size; Potassium and Bromine are present in same period and hence out of the two, Bromine has smaller size.

On comparing Carbon and Bromine, atomic radius increases down the group hence, Carbon has the smallest radius among the four given elements.

You might be interested in

What is the approximate time of death if the body temperature was 15.6°C?

WARRIOR [948]

Answer:

This stiffening process, called Rigor Mortis, has a roughly known time of occurrence and can therefore be used to estimate time of death. In general: If the body feels warm and no rigor is present, death occurred under 3 hours before. If the body feels warm and stiff, death occurred 3-8 hours earlier.

6 0

3 years ago

What is the percent by mass of the solution formed when 5.0 g of solute is dissolved in 40. g of water

d1i1m1o1n [39]

Answer:

2

Explanation:

so let say 5.0/100×40

that is 2

thank you please follow me

7 0

3 years ago

Which statement best describes the effect of beta particles on body tissue?

mash [69]

I think the answer is C

3 0

3 years ago

Read 2 more answers

A rigid tank is divided into two equal volumes. One side contains 2 kmol of nitrogen N2 at 500 kPa while the other side contains

k0ka [10]

Answer:

The partial pressure of the $CO_2$ in the final mixture is 200 kPa.

Explanation:

Pressure of nitrogen gas when the two tanks are disconnected = 500 kPa

Pressure of the carbon-dioxide gas when the two tanks are disconnected = 200 kPa

Moles of nitrogen gas = $n_1= 2 kmol$

Moles of carbon dioxide gas = $n_2=8 kmol$

After connecting both the tanks:

The total pressure of the both gasses in the tank = p = 250 kPa

According to Dalton' law of partial pressure:

Total pressure is equal to sum of partial pressures of all the gases

Partial pressure of nitrogen = $p_{N_2}^o$

Partial pressure of carbon dioxide= $p_{CO_2}^o$

$p_{N_2}^o=p\times \frac{n_1}{n_1+n_2}$

$p_{N_2}^o=250 kPa\times \frac{0.2}{0.2+0.8}=50 kPa$

$p_{CO_2}^o=p\times \frac{n_2}{n_1+n_2}$

$p_{CO_2}^o=250 kPa\times \frac{0.8}{0.2+0.8}=200 kPa$

The partial pressure of the $CO_2$ in the final mixture is 200 kPa.

7 0

3 years ago

Hydrogen sulfide decomposes according to the following reaction, for which Kc = 9.30x10⁻⁸ at 700°C:2H₂S(g) ⇄ 2H₂(g) + S₂(g) If 0

astra-53 [7]

the equilibrium concentration of H₂(g) at 700°C = 0.00193 mol/L

0.00193 mol/L

Given that:

numbers of moles of H₂S = 0.59 moles

Volume = 3.0-L

Equilibrium constant = 9.30 × 10⁻⁸

The equation for the reaction is given as :

2H₂S ⇄ 2H₂(g) + S₂(g)

The initial concentration of H₂S =

The initial concentration of H₂S =

= 0.1966 mol/L

The ICE table is shown be as :

2H₂S ⇄ 2H₂(g) + S₂(g)

Initial 0.9166 0 0

Change -2 x +2 x + x

Equilibrium (0.9166 - 2x) 2x x

(since 2x < 0.1966 if solved through quadratic equation)

The equilibrium concentration for H₂(g) = 2x

∴

= 0.00193 mol/L

Thus, the equilibrium concentration of H₂(g) at 700°C = 0.00193 mol/L

To know more about equilibrium concentration

brainly.com/question/13414142

#SPJ4

5 0

1 year ago