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Morgarella [4.7K]
3 years ago
7

Compare the properties of elements in groups 17 and group 18. Make sure to cover the following points:

Chemistry
2 answers:
Andre45 [30]3 years ago
8 0

Answer:

<em>Letter:</em><em> </em><em>C</em>

explanation:

:)

sdas [7]3 years ago
3 0

Answer:

a) Explain why:

(i) All the elements of a group have similar chemical properties.

(ii) All the elements of a period have different chemical properties.

(b) The atomic radii of three elements X, Y and Z of a period of the periodic table are 186 pm, 104 pm and 143 pm respectively. Giving a reason arrange these elements in the increasing order of atomic number in the period.

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Formal charge of Cl in CHCl3
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A balloon filled with helium has a volume of 6.3 L. What is the mass, in grams, of helium in the balloon?
nikklg [1K]

Answer:

The mass of helium in the balloon is 1.125 grams

Explanation:

Step 1: Data given

Volume of helium = 6.3 L

Molar mass of helium = 4.0 g/mol

Step 2: Calculate moles helium

1 mol gas = 22.4 L

6.3 L = 0.28125 moles

Step 3: Calculate mass of helium

Mass = moles helium * molar mass helium

Mass = 0.28125 * 4.0 g/mol

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3 years ago
A white crystalline salt conducts electricity
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White crystalline salt contains an ionic bond because it is formed due to the transfer of electrons from one atom to another.
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Tides are the rise and fall of surface levels of Earth's ocean water caused by the gravitational effects of which two celestial
NeTakaya

Answer:

<h3>D)Moon and sun</h3>

Explanation:

Because the gravitational pull of the moon is weaker on the far side of the Earth, inertia wins, the ocean bulges out and high tide occurs.

hope it helps:)

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3 years ago
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The layer that is responsible for our magnetic field.​
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