How many valence electrons are in atom of radon?

Chemistry

1 answer:

snow_lady [41]3 years ago

4 0

Answer: 8

Explanation: Radon has 8 valence electrons. Radon is considered stable with a complete octet of electrons, filling the s and p orbitals.

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If the pressure, volume, and temperature of a gas are known, which can most likely be found by using the ideal gas law?

Kazeer [188]

Answer:

The molar amount of gas.

Explanation:

According to the ideal gas law,

PV = nRT

P = pressure of gas

V = volume of gas

n = number of moles of gas

R = ideal gas constant

T= temperature of gas

When pressure, volume and temperature of gas is known the molar amount of gas can be determine by using above formula.

For example:

P = 1.2 atm

R = 0.0821 atm. L.mol⁻¹ .k⁻¹

T = 293 K

V = 2 L

n = ?

Solution:

PV = nRT

1.2 atm × 2L= n × 0.0821 atm. L.mol⁻¹ .k⁻¹ × 293 K

n = 1.2 atm × 2L / 0.0821 atm. L.mol⁻¹ .k⁻¹ × 293 K

n = 0.1 mol

3 0

4 years ago

Which compound has the lowest melting point?<br> • CuO<br> • C6H12O6<br> K2Cr2O7<br> • BaCl2

ss7ja [257]

CuO is the best answer

8 0

3 years ago

Which part of an atom has most of its mass?

grandymaker [24]

Answer:

Explanation:

3 0

3 years ago

4.The anticipated productof this electrophilic aromatic substitution reaction is 4-bromoacetanilide.a)From analysis of your IR s

Lady_Fox [76]

Answer:

Part a: The IR spectrum is not sufficient due to the similar radical group presence in both product and reactants.

Part b: Mass Spectrum data is required in addition to the IR data for confirming the presence of recrystallized product.

Part c: The additional data is consistent with the expectations as the data is in support of that.

Explanation:

Part a

Acetanilide has a characteristic IR peak at around 3100-3200 cm^-1 (N-H Stretching) and 1500-1680 cm^-1 (C=O Stretching). Since a similar radical group ( $NHCOCH_3$ ) is present in the 4-bromoacetanilide, thus it is difficult to affirm the presence of the product solely on the basis of IR spectrum.