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jarptica [38.1K]
3 years ago
15

Which two elements have similar physical and chemical properties?

Chemistry
1 answer:
guapka [62]3 years ago
5 0

Explanation:

Elements in the same group have same number of valence electrons. And we know, the elements which have same number of valence electrons, have similar physical and chemical properties. Hence, the elements in the same group have similar physical and chemical properties.

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Choose the element described by the following electron configuration.
nadezda [96]

Answer:

The answer to your question is Argon

Explanation:

Electron configuration given               1s² 2s² 2p⁶ 3s² 3p⁶

To find the element whose electron configuration is given, we can do it by two methods.

Number 1. Sum all the exponents the result will give you the atomic number of the element.

                      2 + 2 + 6 + 2 + 6 = 18

The element with an atomic number of 18 is Argon.

Number 2. Look at the last terms of the electronic configuration

                      3s² 3p⁶

Number three indicates that this element is in the third period in the periodic table.

Sum the exponents    2 + 6 = 8

Number 8 indicates that this element is the number 8 of that period without considering the transition elements.

The element with these characteristics is Argon.

4 0
3 years ago
Read 2 more answers
What two types of particles exist within an atomic nucleus?
MissTica
Protons and Neutrons, the electrons circle around the nucleus.
Hope this Helps!
6 0
3 years ago
Please answer with an actual answer and not just put a random word ^-^
WARRIOR [948]

Which eclipse was modeled when the large ball was between the small ball and the light?

The model is a "Lunar Eclipse" (If it was talking about the earth, then yes, it is a lunar eclipse).

<u>                                                               </u>

Which eclipse was modeled when the small ball was between the large ball and the light?

The model is a "Solar Eclipse".

<u>                                                               </u>

What does the large ball represent?

The earth.

<u>                                                               </u>

What does the small ball represent?

The moon.

<u>                                                               </u>

What does the light source represent?

The sun.

Hope this helps!~ <3

(I can't draw so sorry.)

<u />

6 0
3 years ago
A nuclear reaction that causes a change in the nucleus of an atom of an element which converts the atom into another
beks73 [17]

Answer:

It might be "Radioactive Decay "  check with someone to conform

Explanation:

7 0
3 years ago
Why does the second row of the periodic table not have a d block section
Dmitry [639]

Answer:

Explanation:

There is only room for eight electrons in the second electron shell, so there can only be eight elements in this period, and no room for another section.

7 0
3 years ago
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