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omeli [17]
3 years ago
8

As the atomic numbers of the elements in column IIA increase, the size of the atoms generally

Chemistry
2 answers:
joja [24]3 years ago
7 0

Answer:

Increase

Explanation:

Gennadij [26K]3 years ago
7 0

<u>Answer:</u> The size of the atoms increases as the atomic number of the elements in Group II-A increases.

<u>Explanation:</u>

Atomic radius of an atom is defined as the total distance from the nucleus to the outermost shell of the atom.

On moving from top to bottom, an extra shell around the nucleus is added and the outermost shell gets far away from the nucleus and hence, the distance between the nucleus and outermost shell increases. Thus, increasing the atomic radii of the atom on moving from top to bottom.

We are given:

Atoms that are present in Group II-A are Beryllium (Z = 4), Magnesium (Z = 12), Calcium (Z = 20), Strontium (Z = 38), Barium (Z = 56) and Radium (Z = 88)

As, the atomic number increases on moving down the group, so does the atomic radius of the atoms in the group.

Hence, the size of the atoms increases as the atomic number of the elements in Group II-A increases.

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If you burn 59.1 g of hydrogen and produce 528 g of water , how much oxygen is reacted
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3 years ago
Sometimes in lab we collect the gas formed by a chemical reaction over water (see sketch at right). This makes it easy to isolat
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Answer:

The correct answer is 0.00582 grams.

Explanation:

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To calculate the moles of hydrogen (H2) gas, there is a need to use the ideal gas equation, that is, PV= nRT, in this R is the gas constant, whose value is 0.0821 L atm/molK, and n is the moles of the gas.

By inserting the values in the equation we get:

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7 0
3 years ago
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