8. How does the number of valence electrons determine whether an element is considered to be...
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...
2.13 Without consulting Figure 2.8 or Table 2.2, determine whether each of the following electron configurations is an inert gas, a halogen, an alkali metal, an alkaline earth metal, or a transition metal. Justify your choices (a) 1s22s22p63s23p5
identify the element in each boxes 1,13,3,20,17,6,8 and 25 A. Has a total of 6 electrons A. Contains 10 protons B. Has 4 electrons in the outer energy level B. Outer shell has an octet of electrons C. non-metal C. Used in "glowing" signs 3 I 20 A. Is a noble gas A. Has the greatest density in its group B. Has 8 electrons in the outer energy level B. A gas that is a by-product of nuclear C. Gas...
1. The number of valence electrons that a VIIA element has is: The number of valence electrons that a VIIA element wants as its octet is: The preferred number of bonds for a VIIA element is: 2. The number of valence electrons that a VIA element has is: The number of valence electrons that a VIA element wants as its octet is: The preferred number of bonds for a VIA element is: 3. The number of valence electrons that a...
Give the symbol of the element an alkaline earth metal in period 4 group 5A (15), period 3 a noble gas in period 3 a halogen in period 3 group 4A (14), period 2
3. Selected symbols have been placed into the blank Periodic Table of the Elements, above. Match the symbol to the following descriptions. Use an element symbol only once. a) a halogen b) a semimetal c) an element in the lanthanide d) an element with atomic number 13 e) an alkali element f) a nonmetal left of the semimetals in the periodic table g) an element in the actinide series h) a representative non-metal in the fourth period i) a noble...
Write the condensed electron configuration for the following: (When typing in electronic config, place the noble gas in square brackets, leave a space between it and all orbitals, and enter electrons as normal text.) A. Cr3+ B. The ion of phosphorus formed by accepting 3 electrons C. The 5th period alkali metal that has lost 1 electron D. The 5th period transition metal that has the same number of valence electrons as a halogen.
1. Name the neutral element(s) in the fourth period of the periodic table which has: a) 7 valence electrons (name two elements) b) [Ar] 4s23d104p2 configuration c) the alkaline earth metal d) the largest atomic radius e) the halogen f) diamagnetic electron configurations (name all elements)
3. Without consulting Figure 2.8 or Table 2.2, determine whether each of the following electron confgurations is an inert gas, a halogen, an dlkali metal, an alkaline earth metal, or a transition metal. Justify your choices.
How do you determine the number of valence electrons in a transition metal? Also, is the d-orbital or the 4s orbital (for period 4) the outermost orbital?