8 for the April Rainers from "Green Grow the Rushes Oh".
[Ar] 3d10 4s2 4p6 or 2, 8, 18, 8
[Ar] 3d10 4s2 4p4 or 2, 8, 18, 6
8 acres in a cricket pitch
AR 600-8-10: Leaves and Passes AR 630-5: Leaves, Passes, Permissive TDY
The electronic configuration of Fe3+ is [Ar] 3d3 4s2 or 2, 8, 11, 2
About 8"
I'll try to answer the question, "If the 5th term of a geometric progression is 2, then the product of its FIRST 9 terms is --?" Given the first term is A and the ratio is r, then the progression starts out... A, Ar, Ar^2, Ar^3, Ar^4, ... So the 5th term is Ar^4, which equals 2. The series continues... Ar^5, Ar^6, Ar^7, Ar^8, ... Ar^8 is the 9th term. The product P of all 9 terms is therefore: P = A * Ar * Ar^2 *...*Ar^8 Collect all the A's P = (A^9)*(1 * r * r^2 ...* r^8) P = A^9 * r^(0+1+2+...+8) There's a formula for the sum of the first n integers (n/2)(n+1), or if you don't know just add it up. 1+2+...+8 = 36 Therefore P = A^9 * r^36 Since 36 is a multiple of 9, you can simplify: P = (Ar^4)^9 Still with me? Remember that Ar^4=2 (a given fact). So finally P = 2^9 = 512. Cute problem.
Ar stand for Argon, a noble gas of group 8 in periodical table.
Yes it is an AR book. It is worth 8 points. The reading level is 6.2.
Flipped has 8 AR points. It is reading level 4.8. The author is Wendelin Van Draanen.
8 for the April Rainers from "Green Grow The Rushes Oh"....Hope you win!!
[Ar] 3d^8 4s^2