how many valence electrons do the following elements
have( hint, this is how they appear on the Periodic Chart, before
they gain or lose electrons)
Br
He
Mg
P
He
K
how many valence electrons do the following elements have( hint, this is how they appear on...
Ø Atte How many valence electrons do atoms of each of the elements have? Na: 1 Hint Check Answ Determine the number of valence electrons in each of the neutral atoms. carbon: nitrogen: oxygen: iodine: phosphorus:
Because of the number of valence electrons (determined above], how many electrons will the lose or gain or what charge will the given elements most likely have? Also indicate the number of bonds each atom will most likely make due to the number of valence electrons.
how many valence electrons are in each of the following elements? Express your answer as an integer. 1.) O 2.) S 3.) Br 4.) Rb
State where in the periodic table these elements appear: Part A elements with the valence-shell electron configuration ns2np5 Part B elements that have three unpaired p electrons Part C an element whose valence electrons are 4s24p1 Express your answer as the group and period number separated by a comma. Part D the d-block elements: groups 3-8, groups 3-12, groups 1-2, Lanthanides, or Actinides
7. How many valence electrons does Br atom have? (1)2 (2) 4 (3) 7 (4) 8 18. How many electrons must a Sc atom lose to form a stable cation? (1) 5 (2)3 (3)7 (4) 8 19. Which element has the following ground-state electron configuration (Kry5s4d105p? (3) 1 (4) Te (1) Sn (2) Sb 20. Which one of the following elements forms a stable 2- anion? (1) P (2) Se (3) AI (4) Mg 21. Which two of the following...
Which of the following elements has the largest effective nuclear charge, Zeff, for valence electrons of each element. K Ga Ge Br
10) How many valence electrons are there in an atom with an electron configuration of 1s 2s 2p 3s 3ps A) 2 B) 3 C) 5 D) 7 E) none of these 11) Consider the element with the electron configuration (Kr]5524d105p. This element is A) a halogen B) a transition metal C) an alkali metal D) an alkaline earth metal E) a noble gas 12) In which set of elements would all members be expected to have very similar chemical...
How many valence electrons does an atom of praseodymium, Pr, have? How many unpaired electrons does an atom of Samarium, Sm, have? What is the geometry for the ClO4- ion? What is the bond angle in the ClO4- ion?
1. How many valence electrons are in the following: N 2. Tell if these will become anions or cations. ca Mg. 3. If pH changes from 6 to 9 how much more basic is the solution? Will it have more or less H* in it than the original solution? 4. How many electron shells would have around the nucleus? 5. What is the atomic number of P? Nitrogenous base NH, 6. The molecule NaCl forms when Nat and Clare attracted...
How many valence electrons does this atom have? An atom has the following successive ionization energies (in kJ/mol). How many valence electrons does this atom possess? 1086 2353 4621 6223 37,831 47,277 53,267 120,472 8 7 5 4 3