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4 years ago

Based on its location on the period table what can most likely be predicted of phosphorus

1 answer:

6 0

Hi, I believe this question is asking what charge Phosphorus will have when it forms an ion. If that is the case, you will see that it based on the column it is in, neutral Phosphorus has 5 valence electrons. When it becomes an ion (has 8 valence electrons), it will GAIN three electrons. Meaning, we can predict that Phosphorus will have a 3- charge when it becomes an ion.

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If the same amount of heat is supplied to samples of 10.0 g each of aluminum, iron, and copper all at 15∘C , which sample would

MaRussiya [10]

Aluminum because it’s specific heat capacity is the highest

4 0

3 years ago

How many milliliters of a 1M nitric acid solution are required to prepare 60mL of 6.7M solution?

Free_Kalibri [48]

Answer:

the number of milliliters of a 1M is 402mL

Explanation:

The computation of the number of milliliters could be determined by using the following formula

As we know that

$V_1\times M_1 = V_2\times M_2$

where,

V_1 and V_2 are the starting and final volumes

And, the M_1 and M_2 are the starting and the final molarities

Now the V_1 is

$V_1 \times 1M = 60mL \times 6.7M$

So, the V_1 is 402mL

Hence, the number of milliliters of a 1M is 402mL

4 0

3 years ago

Predict the ground-state electron configuration of the following ions. Write your answers in abbreviated form, that is, beginnin

abruzzese [7]

These are three questions and three complete answers

Answer:

a) Cr²⁺: [Ar] 4s² 3d²

b) Cu²⁺: [Ar] 4s² 3d⁷

c) Co³⁺: [Ar] 4s² 3d⁴

Explanation:

a) Cr²⁺

Z = 24

Number of protons: 24

Number of elecrons of the neutral atom: 24

Charge of the ions: + 2

Number of electrons of the ion: 24 - charge = 24 - 2 = 22.

Electron configuration:

Fill the orbitals in increasing order of energy. Using Aufbau's rules the order is: 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ .....

Hence, for 22 electrons you get:

1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d²

Abbreviated notation: since the last complete level is the number 3s² 3p⁶, you use the noble gas of the period 3, which is Ar, and the configuration is:

[Ar] 4s² 3d²

b) Cu²⁺

Z = 29

Number of protons: 29

Number of elecrons of the neutral atom: 29

Charge of the ion: + 2

Number of electrons of the ion: 29 - charge = 29 - 2 = 27.

Electron configuration:

Fill the orbitals in increasing order of energy. Using Aufbau's rules the order is: 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ .....

Hence, for 27 electrons you get:

1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d⁷

Abbreviated notation: since the last complete level is the number 3s² 3p⁶, you use the noble gas of the period 3, which is Ar, and the configuration is:

[Ar] 4s² 3d⁷

c) Co³⁺

Z = 27

Number of protons: 27

Number of elecrons of the neutral atom: 27

Charge of the ion: + 3

Number of electrons of the ion: 27 - charge = 27 - 3 = 24.

Electron configuration:

Fill the orbitals in increasing order of energy. Using Aufbau's rules the order is: 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ .....

Hence, for 24 electrons you get:

1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d⁴

Abbreviated notation: since the last complete level is the number 3s² 3p⁶, you use the noble gas of the period 3, which is Ar, and the configuration is:

[Ar] 4s² 3d⁴

6 0

4 years ago

The measures of the angles of △ABC are given by the expressions in the table. Angle Measure A (12x+12)∘ B 15° C (3x+18)∘ What

SOVA2 [1]

Answer:

Angle A = (12 × 9) + 12 = 108 + 12 = 120°

Angle C = (3 × 9) + 18 = 27 + 18 = 45°

Explanation:

if im not wrong this should be right

7 0

3 years ago

Read 2 more answers

The less blank, the more carbon monoxide will be produced

chubhunter [2.5K]

FUELS,GAS,HEATERS, AND FIRES cause carbon monoxide

5 0

3 years ago