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3 years ago

Which of the following is a soft metal in the lightest element that is a solid at standard temperature and pressure?

Chemistry

2 answers:

zysi [14]3 years ago

4 0

Answer: D

Explanation:

Paladinen [302]3 years ago

4 0

Answer:

A)lithium

Explanation:

Among the given options , lithium is the one of the soft element known .

Lithium -

It is a very soft element , denoted by the letters " Li " , the color of this metal is silver .

The position of lithium in the periodic table is in group 1 , period 2 .

the atomic number of Lithium =3 .

It is the lightest metal and at room temperature and pressure .

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3 years ago

Stannum has a body centered tetragonal with lattice constant, a = b = 5.83A and c = 3.18A. If the atomic radius is 0.145 nm, det

Fed [463]

Answer:

the atomic packing factor of Sn is 0.24

Explanation:

a = b = 5.83A and c = 3.18A.

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= 1.08 * 10⁻²²cm³

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$2 \times \frac{4}{3} \pi r^3$

(∴ BCC, effective number of atom is 2)

Volume of atoms =

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$=\frac{2.55*10^-^2^3}{1.08*10^-^2^2} \\\\=0.24$

<h3>therefore, the atomic packing factor of Sn is 0.24</h3>

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3 years ago

Sulfur oxides Carbon monoxides Chlorofluorocarbons (CFCs)Nitrates are responsible for the hole in the ozone layer.

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3 years ago

when Mn2 ions are separated from the mixture, they go through a series of oxidizing and reducing steps. Write the reaction equat

goldfiish [28.3K]

Answer: hello some part of your question is missing below is the missing part

when H₂O and H₂O₂ is added to Mn(OH)₂(s) and put in water bath to dissolve

answer : attached below

Explanation:

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Mn²⁺ ions are separated to the right of the reaction equations

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3 years ago