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Morgarella [4.7K]
2 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]2 years ago
8 0

Answer:

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

explanation:

:)

sdas [7]2 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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No

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2 years ago
How many moles are in 22 grams of argon
Strike441 [17]
<span>number of moles are the amount of substance of an element .
number of moles can be calculated as follows;
number of moles = mass present / molar mass of element
molar mass of Ar - 40 g/mol
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there are 0.55 mol of Ar</span>
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3 years ago
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What is the name and formula of Calcium &amp; Antimony
Bess [88]

Answer:

<h3>Ca3Sb2</h3>
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Explanation:

I hope it's help

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3 years ago
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7 0
2 years ago
Given the following data in the Determination of Molar Mass of CO2 lab : Mass (before rxn): test tube HCl(aq) stir bar capsule 2
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Answer:

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Explanation:

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3 0
3 years ago
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