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Afina-wow [57]
3 years ago
8

Which of the elements has the same Lewis dot structure as calcium (Ca)?

Chemistry
2 answers:
Vlad1618 [11]3 years ago
6 0

Answer:

\boxed {\boxed {\sf A. \ Barium (Ba)}}

Explanation:

Lewis dot structures illustrate the <em>valence electrons </em>in an element.

  • Valence electrons are the outermost electrons in an atom that bond with other atoms by accepting or releasing electrons.
  • The groups, or columns, of the Periodic Table have the same number of valence electrons.

Calcium is in group 2.

The other elements in this group are:

  • Beryllium, Magnesium, Strontium, Barium, and Radium

So, all these elements have the same lewis dot structures because they have the same number of valence electrons.

Based on the answer choices, <u>choice A is correct.</u>

cricket20 [7]3 years ago
3 0
It’s gonna be which ever element(s) that has the same number of valence electrons!!
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marishachu [46]

The persistence of vision is regarded as an optical illusion but it is actually part of human physiology.

<h3>What is persistence of vision?</h3>

The term persistence of vision is the idea that an object is able to remain is sight for a long time even when the object has been removed. This is often used by performers to create a remarkable impression on the audience. The persistence of vision is regarded as an optical illusion but it is actually part of human physiology.

The way that a performance can be designed to make the audience to know that this is the most important scene is called follow through.

Learn more about optical illusion:brainly.com/question/28179807

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7 0
1 year ago
Please calculate the mixed volume (Vmix) when 0.300 mol of ethanol and 0.200 mol of water are mixed. Hint: The partial molar vol
Grace [21]

Answer:

If we assume the molar volumes of water and ethanol 17.0 and 57.0 cm³/mol, respectively, Vmix = 20.5 cm³.

Explanation:

The molar volume of a substance is the ratio between the volume and the number of moles of the substance. It represents the volume that 1 mol of it occupies. Because we don't have access to page 24, let's assume the molar volumes of water and ethanol 17.0 and 57.0 cm³/mol, respectively.

The volume of mixture (Vmix) is the sum of the volume of each substance, which is the number of moles multiplied by molar volume, so:

Vmix = 0.300*57 + 0.200*17

Vmix = 17.1 + 3.4

Vmix = 20.5 cm³

7 0
2 years ago
The electron configuration of an element is 1s22s22p4. Describe what most likely happens when two atoms of this element move tow
Vlad1618 [11]

Answer:

When the two atoms move towards each other a compound is formed by sharing electron pairs supplied by each of the atoms to enable them have the stable 8 (octet) valency electrons in their outermost shell

Explanation:

The electronic configuration of the given element can be written as follows;

1s²2s²2p⁴

The given electronic configuration is equivalent to that of oxygen, therefore, we have;

The number of electrons in the valence shell = 2 + 4 = 6 electrons

Therefore, each atom requires 2 electrons to complete its 8 (octet) electrons in the outermost shell

When the two atoms move towards each other, they react and combine to form a compound by sharing 4 electrons, 2 from each atom, such that each atom can have an extra 2 electrons in its outermost orbit in the newly formed compound and the stable octet configuration is attained by each of the atoms in the newly formed compound.

4 0
2 years ago
Read 2 more answers
Name two example of oxygenase
Nataly_w [17]
Air sksksks and I oop-
4 0
3 years ago
A student has the following data: V1 = 822 mL; T1 = 75.0 °C; T2 = 25.0 °C. She uses this data to calculate V1 and gets -274 mL.
luda_lava [24]
Answer to this question is C. Regarding the volume.
4 0
3 years ago
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