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0.25 mole of C has the same number of atoms as 0.25 mole of Hg. True False
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User: 0.25 mole of C has the same number of atoms as 0.25 mole of Hg. True False

Weegy: This is true.
Expert answered|vchutkan|Points 1059|

User: Electronegativity increases continuously as atomic number increases. True False

Weegy: This is false.
Expert answered|vchutkan|Points 1059|

User: Where are the elements that have the same valence electrons found in the periodic table?

Weegy: They are grouped together in vertical columns.
Expert answered|vchutkan|Points 1060|

User: How many moles of Cl- ions are needed to completely combine with 0.25 moles of Mg+2 ions?

Weegy: You'd need 0.5 moles.
Expert answered|vchutkan|Points 1060|

User: Which element has the greatest electronegativity? B C Cl

Weegy: Fluorine has the greatest overall, however, from those choices, the answer is Cl.
Expert answered|vchutkan|Points 1060|

User: The bonding of two atoms will most likely occur if: a more stable state can result from the union the outer shell can be completely filled all the balance electrons are removed the electronegativities of both atoms are similar

Weegy: The outer shell can be completely filled.
Expert answered|vchutkan|Points 1060|

User: How would Mg change to gain a noble gas structure? lose 2 electrons gain 6 electrons

Weegy: It has to lose 2 electrons.
Expert answered|vchutkan|Points 1060|

User: How could Cl change to gain stability? lose 7 electrons gain one electron

Weegy: It would have to gain one electron.
Expert answered|vchutkan|Points 1060|

User: Positive ions usually form from and are called cations.

Weegy: Yes, positive ions are called cations.
Expert answered|vchutkan|Points 1060|

User: Positive ions usually form from wht

Weegy: They form from metals.
Expert answered|vchutkan|Points 1060|

User: Based upon the ion charge of the following polyatomic ions, predict the formula for the following compounds. sulfate = SO4-2 phosphate = PO4-3 hydroxide = OH- sodium hydroxide

Weegy: NaOH.
Expert answered|vchutkan|Points 1060|

User: In the following table, all the columns for the element sodium are filled out correctly. (Beryllium is done as an example.) Element Electron Configuration of Atom Predicted Ion Charge Beryllium 1s2, 2s2 +2 Sodium 1s2, 2s2, 2p6, 3s1 -1 True False

Weegy: True.
Expert answered|vchutkan|Points 1060|

User: What is the mass of 1.0 x 10-3 mole of Zn? 3.9 x 1022 0.065 0.000015

Weegy: 0.065
Expert answered|vchutkan|Points 1060|

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Asked 6/20/2011 1:40:06 PM
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Questions asked by the same visitor
t Object]User: A vertical column within the periodic table represents a family or
Weegy: A group or family is a vertical column in the periodic table. Groups are considered the most important method of classifying the elements. User: What is common about the elements of a period? (More)
Question
Expert Answered
Asked 6/20/2011 7:12:34 AM
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What is common about the elements of a period? User: How many electrons can the 5th shell hold?
Weegy: 1st shell=2 2nd shell=8 3rd shell=18 4th shell=32 5th shell=32 6th shell=18 7th shell=8 If you are satisfied with my answer, please click 'Good' on the ratings. User: Which is the first element in the periodic table to have an electron configuration in the 4th energy level? User: Which is the first element in the periodic table to have an electron configuration in the 4th energy level? Weegy: wait,, send me another message.. i'll check it out User: Which is the first element in the periodic table to have an electron configuration in the 4th energy level? Weegy: 19 K has electron configuration 1s2, 2s22p 6, 3s2 3p6 - 4s1. 20 Ca has electron configuration 1s2, 2s22p 6, 3s2 3p6 - 4s2. and 21 Sc has electron configuration 1s2, 2s22p 6, 3s2 3p6 3d1, 4s2. [ This is clear that K is the element that has started entering electron in 4s orbital first. Other elements with one electron in 4s orbital are Copper and Chromium. Copper (atomic number 29) has a configuration of [Ar]4s1 3d10, not [Ar]4s2 3d9 as one would expect by the Aufbau principle. Likewise, chromium (atomic number 24) has a configuration of [Ar]4s1 3d5, not [Ar]4s2 3d4 where [Ar] represents the configuration for argon. ] (More)
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Expert Answered
Asked 6/20/2011 7:30:56 AM
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The atomic number of the element which does not usually form compounds because its outermost shell is full is:
Weegy: 3.The outermost shell of all atoms with two or more electron shells will not have more than 8 electrons User: what is The atomic number of the element which does not usually form compounds because its outermost shell is full? Weegy: 3.The outermost shell of all atoms with two or more electron shells will not have more than 8 electrons User: What atomic number corresponds to the element that is most stable? (More)
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Asked 6/20/2011 7:46:42 AM
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The elements with the highest ionization energy, and thus the lowest reactivity, are what?
Weegy: Ionization energy increases as you go across a period from left to right. Ionization energy decreases as you go down a group. Therefore, elements in the upper right of the periodic table have the highest ionization energy. That would be Helium, He. [ Hydrogen has a fairly low ionization energy yielding H+, the proton, present in pure water. ] User: The elements with the highest ionization energy, and thus the lowest reactivity, are: (More)
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Asked 6/20/2011 9:08:13 AM
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Ionization energy is required to add an electron to a neutral atom. True False
Weegy: True (More)
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Asked 6/20/2011 9:52:36 AM
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