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iris [78.8K]
2 years ago
15

The element __ is the most similar to oxygen in chemical and physical properties.

Chemistry
1 answer:
frozen [14]2 years ago
8 0

Answer:

the element air is the most similar to oxygen in chemical. and physical properties

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There were 6 students in the class wearing white sneakers. This would be an example of an observation that is
Rus_ich [418]

Answer:

4.

Explanation:

It's neither qualitative and quantitative. Qualitative is speculation on quality, and quantitative is  speculation on quantity, or the amount of something.

3 0
3 years ago
Write electron configurations for the following ion: Cd2 Cd2 . Express your answer in order of increasing orbital energy. For ex
Mashutka [201]

Answer:

Cd2+ : 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 4d10 or [Kr] 4d¹⁰

Explanation:

Before proceeding to write out the electron configuration of Cd2+, we have to obtain the electron configuration of Cadmium (Cd),

Cadmium has an atomic number of 48, this means that a neutral cadmium atom will have a total of  48  electrons surrounding its nucleus.

The electronic configuration of Cadmium is;

Cd: 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10

The shorthand notation is given as;

Cd: [Kr] 4d¹⁰5s²

Cd2+ means that it has two less electrons, hence it's electron configuration is given as;

Cd2+ : 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 4d10 or [Kr] 4d¹⁰

5 0
3 years ago
(50 POINTS and BRAINLYEST PLEASE)
barxatty [35]

Answer:

tide

Explanation:

A tide is when the moon reactes to the moon is caused gravity to make the tide moves

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3 years ago
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Please help!!! How many moles are in 4.87x1024 atoms of Mg
zhenek [66]
Do you still need help with this
3 0
3 years ago
Dichlorine heptoxide (C1 2 0 7) is a
Setler [38]

Answer:

Identify the "given" information and what the problem is asking you to "find."

Given : Cl2O7

Find: % Composition (% Cl and %O)

List other known quantities.

Mass of Cl in 1 mol Cl2O7 , 2 Cl : 2 x 35.45 g = 70.90 g

Mass of O in 1 mol Cl2O7 , 7 O: 7 x 16.00 g = 112.00 g

Molar mass of Cl2O7 = 182.90 g/mol

8 0
3 years ago
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