Chemistry, 29.01.2020 19:45, asiamuhammad6

Which of these elements has two electrons in its outer p orbitals?

helium (he)

barium (ba)

nitrogen (n)

silicon (si)

sulfur (s)

Answers: 2

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answered: lavardamon123

Silicon (si) has two electrons in its outer p orbitals.

Explanation:

For the element of SILICON, you previously know that the atomic number shows the number of electrons. That indicates there are 14 electrons in a silicon atom. Looking at the design, you can see there are two particles in shell one, eight in shell two, and four in shell three. Si which is 4 elements from the left side of the table,first 2 electrons are s orbitals when next two electrons go to Si

answered: sairaanwar67

Answer : The correct option is, Silicon (Si)

Explanation :

Element = Helium

Atomic number = Number of electrons = 2

The electronic configuration will be, 1s^2

Element = Barium

Atomic number = Number of electrons = 56

The electronic configuration will be, $1s^22s^22p^63s^23p^64s^23d^{10}4p^65s^24d^{10}5p^66s^2$

Element = Nitrogen

Atomic number = Number of electrons = 7

The electronic configuration will be, 1s^22s^22p^3

Element = Silicon

Atomic number = Number of electrons = 14

The electronic configuration will be, 1s^22s^22p^63s^23p^2

Element = Sulfur

Atomic number = Number of electrons = 16

The electronic configuration will be, 1s^22s^22p^63s^23p^4

From the electronic configurations, we conclude that the element silicon has two electrons in its valence 'p' orbital or outermost 'p' orbitals.

Hence, the correct option is, Silicon (Si)

answered: Guest

explanation:

let the different atoms be x and y. each with four protons and same mass will be represented as follows.

mass number is number of protons + number of neutrons.

$^{m}_{4}x$ and $^{m}_4y$

since, it is given that one has a negative charge while the other is neutral. therefore, there will be increase in number of protons and the atom will be represented as follows.

$^{m}_{5}x^{-}$

according to periodic table, mass number of beryllium is 9 and it has atomic number 4 so, the atoms will be $^{9}_{5}be^{-}$ and $^{9}_{4}be$ .

the protons and neutrons will be located inside the nucleus whereas the electrons will be revolving around the nucleus.

answered: Guest

if you're asking what comes out, it's steam.

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Do you know the correct answer?

Which of these elements has two electrons in its outer p orbitals?

helium (he)