All categories

2 years ago

As you move from row to row in the periodic table, the atomic radius of the elements DECREASES.

Chemistry

1 answer:

Margarita [4]2 years ago

6 0

Answer:

7 to 1

Explanation:

As you move from row ----- to row ------ in the periodic table, the atomic radius of the elements DECREASES.?

And we have 7 rows in a periodic table, so the answer has to either 1 to 7 or 7 to 1

Theoretically,

Atomic size increase as we move from top to bottom as an extra shell gets added up with every period.

SO, the answer is, 7 to 1

You might be interested in

Define chemical change and give an example

Brilliant_brown [7]

Definition-A formation of new chemical substances.
Example- Sugar undergoes a chemical change when it is cooked to make caramel. :3

Hope I helped! Sorry if it's bad.

4 0

2 years ago

Read 2 more answers

Which of the following is a molecule but

Oksana_A [137]

Answer:

CO2

Explanation:

All of the other options are elements found on the periodic table but Carbon Dioxide are two elements.

5 0

2 years ago

The reactions of the Calvin cycle are not directly dependent on light, but they usually do not occur at night. Why? Group of ans

kati45 [8]

Answer:

The correct answer is a The calvin cycle requires products only produced when the photsystems are illuminated .It is often too cold at night for the reaction to take place.

Explanation:

It is true that the reactions of calvin cycle are not directly depends on light but depends on the products such as ATP and NADPH produced during light reaction.

ATP and NADPH is formed by the illumination of photosystems by sun light.So during night time there is no chance for the light dependent illumination of the photosystems.

As a result the ATP and NADPH are not formed during night .That"s why reactions of calvin cycle does not occur at night.

6 0

2 years ago

What is necssesary for a plant to exhibit phototropism

Solnce55 [7]

Hey The cells on the plant that are farthest from the light have a chemical called auxin that reacts when phototropism occurs.

4 0

2 years ago

You have 50 ml of a complex mixture of weak acids that contains some HF (pKa = 3.18) and some HCN (pKa = 9.21). Which is larger,

bonufazy [111]

Answer:

$\frac{[F^{-}]}{[HF]}$ is larger

Explanation:

$pK_{a}=-logK_{a}$ , where $K_{a}$ is the acid dissociation constant.

For a monoprotic acid e.g. HA, $K_{a}=\frac{[H^{+}][A^{-}]}{[HA]}$ and $\frac{[A^{-}]}{[HA]}=\frac{K_{a}}{[H^{+}]}$

So, clearly, higher the $K_{a}$ value , lower will the the $pK_{a}$

In this mixture, at equilibrium, $[H^{+}]$ will be constant.

$K_{a}$ of HF is grater than $K_{a}$ of HCN

Hence, $(\frac{F^{-}}{[HF]}=\frac{K_{a}(HF)}{[H^{+}]})>(\frac{CN^{-}}{[HCN]}=\frac{K_{a}(HCN)}{[H^{+}]})$

So, $\frac{[F^{-}]}{[HF]}$ is larger

5 0

2 years ago

As you move from row ______ to row ______ in the periodic table, the atomic radius of the elements DECREASES.

As you move from row to row in the periodic table, the atomic radius of the elements DECREASES.