a)
F is in group 7 of main periodic table.
It accepts 1 electron and achieve stable noble gas configuration.
So, charge is -1
Answer: -1
B)
Ca is in group 2 of main periodic table.It has 2 valence electrons.
It looses these 2 electrons and achieve stable noble gas configuration.
So, charge is +2
Answer: +2
c)
While writing formula of ionic compounds:
Charge of cation becomes subscript of anion
Charge of anion becomes subscript of cation
Ca2+ and F- forms CaF2
Answer: CaF2
5. The elements fluorine (F) and calcium (Ca) form the ionic compound calcium fluoride. a. When...
Decide whether each pair of elements in the table below will form an ionic compound. If they will, write the empirical formula of the compound formed in the space provided. Forms ionic empirical formula of lonic compound element #1 element #2 compound? chlorine oxygenv yes no cesium oxygen yes no cesium fluorine yes no cesium calcium yes no
Decide whether each pair of elements in the table below will form an ionic compound. If they will, write the empirical formula and name of the compound formed in the spaces provided. element #1 element #2 Forms ionic compound? empirical formula of ionic | name of ionic compound compound x magnesium O yes O no 6 ? sulfur rubidium fluorine O yes O no sulfur rubidium O yes no magnesium fluorine O yes O no
Decide whether each pair of elements in the table below will form an ionic compound. If they will, write the empirical formula and name of the compound formed in the spaces provided. element #1 element #2 Forms ionic compound? empirical formula of ionic compound name of ionic compound x s ? iodine magnesium sodium calcium Dyes no O yes no O yes o no O yes no oxygen chlorine sodium oxygen
Problem Page Decide whether each pair of elements in the table below will form an ionic compound. If they will, write the empirical formula and name of the compound formed in the spaces provided. element #1 element #2 Forms ionic compound? empirical formula of ionic compound name of ionic compound barium lithium yes no sulfur magnesium yes no sulfur fluorine yes no lithium sulfur yes no
Predicting ionic compounds formed by two elements Abde Decide whether each pair of elements in the table below will form an ionic compound. If they will, write the empirical formula of the compound formed in the space provided. element #1 element #2 Forms ionic compound? empirical formula of ionic compound Da sulfur iodine yes no X 6 sodium fluorine yes no lithium bromine eyes no O sulfur sodium yes no
Decide whether each pair of elements in the table below will form an ionic compound. If they will, write the empirical formula and name of the compound formed in the spaces provided. element #1 element #2 empirical Forms lonie formula of lonic compound? compound name of lonic compound X 5 oxygen chlorine bromine sodium 0 yes no yes no yes no Joyes o no magnesium sodium sodium oxygen
Atoms, Ions and Molecules: Predicting and naming ionic compounds
formed by two elements
Decide whether each pair of elements in the table below will form an ionic compound. If they will, write the empirical formula and name of the compound formed in the spaces provided. element #1 element #2 Forms ionic compound? empirical formula of ionic compound name of ionic compound potassium bromine O yes no X 5 ? cesium oxygen O yes O no strontium cesium O yes O...
Decide whether each pair of elements in the table below will form an ionic compound. If they will, write the empirical formula and name of the compound formed in the spaces provided.
AlF3 Name: aluminum fluoride (b) S and F O ionic O covalent Empirical formula: SFO ® Name: | sulfur hexafluoride X Be sure to answer all parts. For each of the following pairs of elements, state whether the binary compound th ionic or covalent. Write the empirical formula and name of the compound. (a) Al and F ionic covalent Empirical formula: AlF3 Name: aluminum fluoride (b) S and F O ionic covalent Empirical formula: SF 6
6. The molecular formula of the ionic compound calcium nitrate is Ca(NO3)2 a. Based on the formula given for calcium nitrate, what is the charge (sign and size) on the polyatomic nitrate ion NO3? In other words, what is "x" in the formula NO3? How do you know? b. Calculate the molar mass of calcium nitrate to 2 decimal places. Show how you arrived at your answer. Determine the number of moles in a 65-ng sample of calcium nitrate. c.