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3 years ago

Complete the chart. (Remember to enter a 0 if necessary.) Atomic Number: 3 1s: 2s: 2p: 3s: 3p: 4s: 3d: 4p: 5s:

Chemistry

2 answers:

adoni [48]3 years ago

6 0

The atom you're looking for is Lithium (Li)

1s:2

2s:1

all the others are 0 as the slots fill in a certain order.

Afina-wow [57]3 years ago

3 0

Answer : The electronic configuration of atomic number 3 will be, $1s^22s^12p^03s^03p^04s^03d^04p^05s^0$

Explanation :

As we are given that the atomic number of an element is, 3. Now we have to determine the electronic configuration of an element that has the atomic number 3.

As we know that the atomic number is equal to the number of protons or number of electrons.

So, the number of electrons is equal to 3.

Electronic configuration : It is defined as the arrangement of electrons of an atoms or ions in an atomic orbital.

Therefore, the electronic configuration of atomic number 3 will be, $1s^22s^1$

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A positively charged substance is brought near the ion. What will most likely happen and why

d1i1m1o1n [39]

<u>Answer:</u> It repels positive ion and attracts negative ion.

<u>Explanation:</u>

There are 2 types of ions:

1. Cations: These ions are positively charged ions which are formed when a substance looses electrons.

2. Anions: These ions are negatively charged ions which are formed when a substance gains electrons.

It is known that, like charges repel each other and unlike charges attract each other.

As, it is given that the substance is positively charged, so it will attract anion and repel cation.

4 0

4 years ago

If a shell can hold a maximum of 32 electrons, what is the value of n?

olga2289 [7]

<span>Begin by classifying which energy level, and indirectly principal quantum number, n, resembles to the N shell. no. of orbitals =n2 In your case, the fourth energy level will contain n=4⇒no. of orbitals= 4^2=16 The number of subshells is given by the principal quantum number. no. of subshells=n In your case, the fourth energy level will have no. of subshells = 4 this is the answer to check: the fourth energy shell will can hold a thoroughgoing of no. of electrons=2⋅42=32 e−</span>

4 0

3 years ago

Read 2 more answers

bio 102 Wildfire is a problem throughout the world because of high levels of _______ in the atmosphere Group of answer choices m

Bas_tet [7]

<h2>Carbon-dioxide</h2>

Explanation:

Wildfires are blazes that are impossible to control which burn land by huge amounts and burns over everything that comes in their paths like plant animals and other living creatures.

In the mentioned gases, Carbon dioxide is the main reason responsible for wildfire.

Carbon dioxide is known to be the main driver behind the warming of the earth 's atmosphere which is mainly induced by humans, and its increase in the concentration in the atmosphere is regularly increasing day-by-day.

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3 years ago

Which of the following best describes the change in Antarctic temperature from about 440,000 years ago to about 340,000 years ag

Vlada [557]

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Explanation:

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3 years ago

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How many moles are 1.20x10^25 formula units of calcium iodide?

nalin [4]

Avagadros number states that 1 mol of any substance is made of 6.022 x 10²³ units.

these units could be atoms, molecules or formula units.

therefore 1 mol of Calcium iodide is made of 6.022 x 10²³ formula units

so if 6.022 x 10²³ formula units make up 1 mol

then 1.20 x 10²⁵ formula units - make $\frac{1*1.20*10^{25}}{6.022*10^{23}}$ = 19.9 mol