Chemistry, 27.06.2019 15:40 janiyanmartin07

The diagram shows the electron configuration of an atom of an element for the electrons in the s and p orbitals. what is the group number of the element in the periodic table? a. 17 b. 16 c. 2 d. 1

The diagram shows the electron configuration of an atom of an element for the electrons in the s and

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Answer from: quan91

A. 17

Explanation:

Periods and Groups are key to remember

Periods are horizontal rows while

Groups are vertical rows

There are 9 valence electrons within this configuration

The Electron Configuration for said diagram is 1s^2,2s^2,2p^5

Fluorine is the element that said diagram represents

The group in which Fluorine is in, is Group 17. More notably 7A.

Answer from: BluedragonKBT44

Answer : The correct option is, (A) 17

Explanation:

Group : A column in the periodic table is known as group.

The common features about the elements of a same group is that the each groups has elements with the same number of valance electrons.

As we know that if the element belongs to s-block, its group number = Number of valence electrons (or outermost shell electrons).

As we know that if the element belongs to p- block then the group number = no. of valence electrons + 10

From the given diagram of electronic configuration of an atom we conclude that, there are 7 valence electrons present in their outermost shell. So,

Group number = Number of valence electrons + 10

Group number = 7 + 10 = 17

Hence, the group number of the element in the periodic table is, 17.

Answer from: Quest

explanation:

Answer from: Quest

Given data,temperature, t = 230°c = 503 kconsider the chemical reaction,ch₃oh(l) + 1/2 o₂(g) → ch₂o(g) + h₂o(l)calculate the enthalpy change for the reaction: δh⁰rxn = σnδh⁰f(products) - σmδh⁰f(reactants)substitute the values from the table: δh⁰rxn = { -115.9 + (-285.8)} - {0+(-238.7)} = -163.0 kjcalculate the entropy change for the reaction.δs⁰rxn = (219 + 70) - (127.2 + 1/2 x 205.2) = 59.2 j/kconsider the expression for free energy: δg⁰rxn = δh⁰rxn - t δs⁰rxnsubstitute the values in the above equationδg⁰rxn = -163 x 10³ - (503 x 59.2) = -192777.6 j = -192.777 kj

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The diagram shows the electron configuration of an atom of an element for the electrons in the s and...

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