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Rudik [331]
3 years ago
11

Why elements are arranged according to atomic number rather than atomic mass in the periodic table

Chemistry
1 answer:
Rama09 [41]3 years ago
4 0

Answer:

Mendeleev placed certain elements not in order of increasing atomic mass so that they could fit into the proper groups (similar elements have similar properties) of his periodic table.

Explanation:

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Complete the chart below.
omeli [17]

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Sodium (Na) and potassium (K) are in the same group in the periodic table. Sodium is in the 11th position. How many valence elec
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4 0
3 years ago
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Cart A has a mass of 14 kg and is being pulled with a force of 25 N. Cart B has a mass of
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Answer:

the awnser is Cart A.

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7 0
3 years ago
Choose a generic equation showing how a weak base ionizes water.
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Hi!

The generic equation showing how a weak base ionizes water is the following:

B(aq) + H₂O(l) ⇄ BH⁺(aq) + OH⁻(aq)

A base is described as weak when its dissociation is difficult and isn't complete. Weak Bases are chemical compounds that accept protons from water, to form the conjugate acid and the OH⁻ ion. The pH of the solution of a weak base is higher than 7. Some weak bases include ammonia (NH₃), Aluminum Hydroxide (Al(OH)₃) and Sodium Acetate (CH₃COONa).

Have a nice day!
4 0
3 years ago
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