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sweet [91]
3 years ago
7

Which two metalloids have the same number of electrons shells as iodine? A. boron and silicon B. antimony and tellurium C. germa

nium and arsenic D. astatine and boron
Chemistry
2 answers:
shepuryov [24]3 years ago
5 0
B.) ANTIMONY & TELLURIUM
maxonik [38]3 years ago
5 0

Answer is: B. antimony and tellurium.

1) Iodine (I) is an element with atomic number 53 (53 protons and 53 electrons), it is in group 17 (halogen element) and period 5 (principal quantum number n = 5, which means it has 5 electrons shell) of Periodic table.

Electron configuration of iodine atom: 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ 4d¹⁰ 5s² 5p⁵.

2) Tellurium (Te) is an element with atomic number 52 (52 protons and 52 electrons), it is in group 16 (chalcogens) and period 5 (principal quantum number n = 5, which means it has 5 electrons shell) of Periodic table.

Electron configuration of tellurium atom: 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ 4d¹⁰ 5s² 5p⁴.

3) Antimony (Sb) is an element with atomic number 51 (51 protons and 51 electrons), it is in group 15 (pnictogens) and period 5 (principal quantum number n = 5, which means it has 5 electrons shell) of Periodic table.

Electron configuration of antimony atom: 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ 4d¹⁰ 5s² 5p³.

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svp [43]

Answer:

C. Splitting the atom

Explanation:

splitting the atom involves fission

4 0
3 years ago
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chemistry A basketball is inflated to a pressure of 1.10 atm in a 28.0°C garage. What is the pressure of the basketball outside
butalik [34]

Answer : The final pressure of the basketball is, 0.990 atm

Explanation :

Gay-Lussac's Law : It is defined as the pressure of the gas is directly proportional to the temperature of the gas at constant volume and number of moles.

P\propto T

or,

\frac{P_1}{P_2}=\frac{T_1}{T_2}

where,

P_1 = initial pressure = 1.10 atm

P_2 = final pressure = ?

T_1 = initial temperature = 28.0^oC=273+28.0=301.0K

T_2 = initial temperature = -2.00^oC=273+(-2.00)=271.0K

Now put all the given values in the above equation, we get:

\frac{1.10atm}{P_2}=\frac{301.0K}{271.0K}

P_2=0.990atm

Thus, the final pressure of the basketball is, 0.990 atm

7 0
3 years ago
Which of the following is an example of a compounds?
wlad13 [49]

Answer:b.CaCl2

Explanation:

A compound is  a substance resulting when two or more elements  are are chemically bonded together either ionically or covalently in a fixed ratio.

From the given options we can see that the only compound there  is CaCl2 which is an ionic compound in the fixed  ratio of one calcium ion to two chloride ions.

Other options , Cu,Na and Nd are merely pure substance---Elements

5 0
2 years ago
What are the effects of viagra?
koban [17]
<span><span>An erection that will not go away (priapism). 
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3 years ago
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What is the expected hybridization of the central atom tetrahedral
Pepsi [2]

Answer:

Tetrahedral molecules are normally spy hybridized.

Explanation:

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