All categories

3 years ago

7. The atomic number equals the number of blank or blank in a stable atom of an element.

Chemistry

1 answer:

MakcuM [25]3 years ago

5 0

Answer:

Atomic Number

Neutral atoms of an element contain an equal number of protons and electrons. The number of protons determines an element's atomic number (Z) and distinguishes one element from another.

Explanation:

You might be interested in

Which of the following is a mixture? Gold Honey Steel Water

Ronch [10]

Hi,

The option above that is correct to the question is 'Honey'.

Gold, steel, and water are all organic or natural resources.

Faith xoxo

7 0

3 years ago

Read 2 more answers

A hypothetical AX type of ceramic material is known to have a density of 3.55 g/cm3 and a unit cell of cubic symmetry with a cel

postnew [5]

Explanation:

For AX type ceramic material, the number of formula per unit cells is as follows.

$\rho = \frac{n'(A_{c} + A_{A})}{V_{C}N_{A}}$

or, $n' = \frac{\rho a^{3}N_{A}}{(A_{c} + A_{A})}$

where, n' = no. of formula units per cell

$A_{c}$ = molecular weight of cation = 90.5 g/mol

$A_{a}$ = molecular weight of anion = 37.3 g/mol

$V_{c}$ = volume of cubic cell = 3.55 $g/cm^{3}$

a = edge length of unit cell = $3.9 \times 10^{-8} cm$

$N_{A}$ = Avogadro's number = $6.023 \times 10^{23}$

$\rho$ = density = 3.55 $g/cm^{3}$

Now, putting the given values into the above formula as follows.

$n' = \frac{\rho a^{3}N_{A}}{(A_{c} + A_{A})}$

= $\frac{3.55 g/cm^{3} \times (3.9 \times 10^{-8})^{3} \times 6.023 \times 10^{23}}{(90.5 + 37.3)}$

= 0.9

= 1 (approx)

Therefore, we can conclude that out of the given options crystal structure of cesium chloride is possible for this material.

3 0

3 years ago

What is the correct formula for the product represented by the letter x

ANTONII [103]

Then I would guess the answer is D because Na2OH is much more common and stable than Na2O is

3 0

4 years ago

A graduated cylinder is filled with 60.0 ml of water. A cube, made of aluminum, is carefully dropped into the cylinder. Aluminum

katen-ka-za [31]

Answer:

65 ml

Explanation:

The aluminum will not float , so it will displace a volume of fluid equal to its volume.

13.5 gm / 2.7 gm/ml = 5 ml

the new graduated cylinder measurement will be 60 + 5 = 65 ml

3 0

2 years ago

One example of an ionic compound is F2 CO2 HBr MgCL2

allochka39001 [22]

MgCl2 because it is the only option in which a metal appears with a nonmetal. In this case, the metal transfers electrons to the nonmental because the metal has a lower ionization energy.

7 0

4 years ago

Read 2 more answers

7. The atomic number equals the number of blank or blank in a stable atom of an element.​

7. The atomic number equals the number of blank or blank in a stable atom of an element.