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Goshia [24]
3 years ago
6

Choose the atom that has the smallest atomic radius. Rb Na K Li

Chemistry
2 answers:
vesna_86 [32]3 years ago
8 0
The answer is Rb.....................................
sdas [7]3 years ago
6 0

Answer: Option (d) is the correct answer.

Explanation:

The given elements are Rb, Na, K and Li and all these elements are group 1 elements.

These are also known as alkali metals. These elements are placed in the order from top to bottom as Li, Na, K, Rb.

It is known that when we move down a group then there is increase in the size of atom. As a result, atomic radius also increases.

Thus, atom at the top which is lithium (Li) will have the smallest atomic radius.


                       

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vladimir2022 [97]

They vibrate slower.

7 0
3 years ago
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Which word equation shows hydrogen reacting with oxygen to form water?
LenaWriter [7]

Answer:

O2+H2 → H2O

become→zero to−2

∵ it will be reduced and oxidation state of H

2

becomes zero to +1 it will be oxidised.

∴ reaction will be redox

Explanation:

please mark me as brainalist

5 0
2 years ago
If the NaOH is added to 35.0 mL of 0.167 M Cu(NO3)2 and the precipitate isolated by filtration, what is the theoretical yield of
Ghella [55]

Answer:

The correct answer is - 0.570 grams

Explanation:

The balanced chemical reaction is given by

Cu(NO3)2(aq)     + 2NaOH(aq)    -------->    Cu(OH)2(s)      + 2NaNO3(aq)

        1.0 mole            2.0 mole                 1.0 mole          2.0 mole

number of mol of Cu(OH)2,

n = Molarity * Volume

= 35.0*0.167 = 5.845 millimoles

As clear in the equation, 1 mole of Cu(NO3)2 gives 1 mole of Cu(OH)2 , So, 5.845 millimoles of Cu(NO3)2 will produce 5.845 millimoles of Cu(OH)2

Mass of Cu(OH)2 = number of mol * molar mass

= 97.5*5.845*10^-3

= 0.570 grams

Thus, the correct answer is - 0.570 grams

8 0
3 years ago
PLEASE HELP!!
lana66690 [7]

Answer:

c

Explanation:

3 0
4 years ago
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Iron has a density of 7.86 g/cm3 (1 cm3=1 mL). Calculate the volume (in dL) of a piece of iron having a mass of 4.84 kg . Note t
Marrrta [24]
1 kg ---------- 1000 g
4.84 kg ------ ?

4.84 x 1000 / 1 => 4840 g

D = m / V

7.86 =4840 / V

V = 4840 / 7.86

V = 615.77 cm³

1 cm³ ------------ 0.01 dL
615.77 ----- ?

615.77 x 0.01 / 1

= 6.1577<span> dL</span>
6 0
4 years ago
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