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3 years ago

What contains elements with similar properties in the periodic table?

Chemistry

2 answers:

evablogger [386]3 years ago

8 0

<h2>Answer:</h2>

<u>A) A column</u> contains elements with properties which are similar in periodic table.

<h2>Explanation:</h2>

The vertical section (column) in the periodic table has the similar type of chemical behavior so they are also called as groups or families. The electronic configuration gives the chemical description of the compound.

The chemical compounds in these families have the number of valence electron which is same in the outer cell hence, showing the same chemical properties. Halogens and Nobel gases are the groups of periodic table.

Nataly [62]3 years ago

6 0

A) a column

example: earth alkaline metals

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4. Ammonia is produced by the chemical reaction of nitrogen and hydrogen. N2 (g) + 3H2(g) →→ 2NH3 (9) (A) Calculate the number o

Makovka662 [10]

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a) No. of moles of hydrogen needed = 5.4 mol

b) Grams of ammonia produced = 27.2 g

Explanation:

$N_2 (g) + 3H_2(g) \rightarrow 2NH_3 (g)$

No. of moles of nitrogen = 1.80 mol

1 mole of nitrogen reacts with 3 moles of hydrogen

1.80 moles of nitrogen will react with

= 1.80 × 3 = 5.4 moles of hydrogen

No. of moles of hydrogen = 2.4 mol

It is given that nitrogen is present in sufficient amount.

3 moles of hydrogen produce 2 moles of $NH_3$

2.4 moles of hydrogen will produce

= $\frac{2}{3} \times 2.4 = 1.6\ mol\ of\ NH_3$

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