All categories

3 years ago

As you move from left to right across a period, what happens to the atomic radii?

Chemistry

2 answers:

GrogVix [38]3 years ago

3 0

Answer:

They decrease, because of the stronger effective nuclear charge.

Explanation:

Atomic radii decreases from left to right across a period.

This is due to the increase in the no. of protons and electrons through the period.

One proton has a greater effect than one electron.

So, electrons are attracted towards the nucleus and resulting in a smaller atomic radii.

<em>Thus, the right choice is: They decrease, because of the stronger effective nuclear charge.</em>

nikdorinn [45]3 years ago

3 0

Answer:

c. They decrease, because of the stronger effective nuclear charge.

Explanation:

You might be interested in

Zn + 2HCI --> ZnCl2 + H2

Elena-2011 [213]

Moles= mass\ relative formula mass(Ar)
moles of zinc= 7.9/30= 0.263
so we have 0.263 moles of zinc, and you need twice the amount of chlorine so therefore 0.526moles of chlorine= 0.526x 17=8.942g of chlorine
i cba to work the rest out but the most reasonable answer is 0.24 mol however if you need to use working outs, use the formula i provided earlier

8 0

2 years ago

Ammonia (NH3) is produced in the human body as a waste product during the digestion of protein. How many moles of N2 will be nee

Bad White [126]

Answer:

43.5

Explanation:

there are 43.5 moles of N2

3 0

2 years ago

What is the de Broglie wavelength (in meters) of a 45-g golf ball traveling at 72 m/s?

Cerrena [4.2K]

Answer: The de broglie wavelength is $2.037 \times 10^{-34} m$ .

Explanation:

Calculate $\lambda = \frac{h}{p}$ as follows.

$\lambda = \frac{h}{p}$

where,

h = plank's constant = $6.6 \times 10^{-34} m^{2} kg/s$

p = momentum = $mass \times velocity$

Putting the values in the formula as follows.

$\lambda = \frac{h}{mass \times velocity}$

= $\frac {6.6 \times 10^{-34} m^{2} kg/s}{0.045 kg \times 72 m/s}$

= $2.037 \times 10^{-34} m$

Thus, the de broglie wavelength is $2.037 \times 10^{-34} m$ .

6 0

2 years ago

Read 2 more answers

Climate has changed naturally throughout Earth’s history, but how is climate change today different?

Alex_Xolod [135]

Answer: Earth's climate has fluctuated through deep time, pushed by these 10 ... How Earth's Climate Changes Naturally (and Why Things Are Different Now) ... So if the climate changed before humans, how can we be sure we're ... can be disruptive, but in the grand scale of Earth's history it's tiny and temporary

Explanation:

7 0

2 years ago

How to do 22.4 kg/L to kg/mL

emmainna [20.7K]

1 kg/L ----------- 0.001 kg/mL
22.4 kg/L ------- ??

22.4 x 0.001 / 1 => 0.0224 kg/mL

6 0

2 years ago