The rth term in the 19th row is 19Cr = 19!/[r!*(19-r)!] where k! = 1*2*3*...*k
The three numbers are pairwise coprime so the answer is any number of the form k*11*15*19 where k is an integer.
It could be, if it is a regular stick arrow then no.
k^2 + k = k^2 + k k^2 x k = k^3
72 - k = 31 Therefore, k = 72 - 31 k = 41
K-
The atomic number of potassium is 19. So there are 19 protons, 19 electrons. In K-40 isotope, there are 21 neutrons.
An electric-neutral K atom has 19 protons and 19 electrons.
The element with 19 protons is potassium, which is represented by the symbol K on the periodic table.
K-19, the widowmaker K-19, the widowmaker
The atomic weight of K (Potassium) is 39.0983 g/mol
Potassium's atomic symbol is K and its atomic number is 19.
Peter A. Huchthausen has written: 'Hostile waters' -- subject(s): K-219 (Submarine), Submarine disasters 'Hide and seek' 'America's splendid little wars' 'K-19' -- subject(s): Accessible book, K-19 (Submarine), Historical films, Nuclear submarines, Submarine disasters, K-19 (Motion picture), History, Popular Print Disabled Books 'October Fury (Church of England)' 'K-19: The Widowmaker' 'K-19' -- subject(s): Accidents, K-19 (Submarine), Nuclear submarines, Submarine disasters
The rth term in the 19th row is 19Cr = 19!/[r!*(19-r)!] where k! = 1*2*3*...*k
Potassium (K) is an alkali metal whose atoms have one valence electron. The atomic number of K is 19, which means its atoms have 19 protons in their nuclei. A neutral K atom also has 19 electrons. An atom of K will lose its single valence electron to become a K+ cation. Therefore, there are 18 electrons in a K+ cation.
K Viswanath was born on February 19, 1930.
K. Subrahmanyam was born on 1929-01-19.