Write the group number using both A/B and 1 to 18 notations for elements that have the following outer electron configuration:
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Basic Chemistry
- Answer the questions below about the elements A and B, which haw the electron configurations shown. A = [Kr]5s1 B =[Ar]3d104s24p4 (a) Is element A a metal, nonmetal, or metalloid? (b) Which element has the greater ionization energy? (c) Which element has the less negative electron attachment enthalpy? (d) Which element has the larger atomic radius? (e) What is the formula for a compound formed between A and B?arrow_forwardWhich of the following groups of elements is arranged correctly in order of increasing ionization energy? (a) C Si Li Ne (b) Ne Si C Li (c) Li Si C Ne (d) Ne C Si Liarrow_forwardName the element corresponding to each characteristic below. (a) the element with the electron configuration 1s22s22p63s23p3 (b) the alkaline earth element with the smallest atomic radius (c) the element with the largest ionization energy in Croup 5A (d) the element whose 2+ ion has the configuration [Kr]4d5 (e) the element with the most negative electron attachment enthalpy in Croup 7A (f) the element whose electron configuration is [Ar]3d104s2arrow_forward
- Group the following elements into three similar groups of two each: Na, O, Ne, Li, Ar, Sarrow_forwardName and give the symbol of the element that has the characteristic given below. (a) Its electron configuration in the excited state can be 1s22s22p63s1 3p3. (b) It is the least electronegative element in period 3. (c) Its +3 ion has the configuration [36Kr]. (d) It is the halogen with the largest atomic radius. (e) It has the largest ionization energy in Group 16.arrow_forwardCompare the elements B. Al, C, and Si. (a) Which has the most metallic character? (b) Which has the largest atomic radius? (c) Which has the most negative electron attachment enthalpy? (d) Place the three elements B, Al, and C in order of increasing first ionization energy.arrow_forward
- An unknown element is a nonmetal and has a valence electron configuration of ns2np4 a. How many valence electrons does this element have? b. What are some possible identities for this element? c. What is the formula of the compound this element would form with potassium? d. Would this element have a larger or smaller radius than barium? e. Would lhis element have a greater or smaller ionization energy than fluorine?arrow_forwardDraw the orbital diagram associated with each of the following electron configurations. a. 1s22s22p5 b. 1s22s22p63s1 c. 1s22s22p63s23p1 d. 1s22s22p63s23p64s23d5arrow_forwardHow many valence electrons do each of the following elements have, and what are the specific valence electrons for each element? a. Ca b.O c. element 117 d. In e. Ar f. Biarrow_forward
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