A secondary carbocation is one in which there. are two carbons attached to the carbon bearing the positive charge. Likewise, a tertiary. carbocation is one in which there are three carbons attached to the carbon bearing the. positive charge. Methyl carbocations. No CâC+ bonds.
Numeric keypad. A numeric keypad, number pad, numpad, or ten key, is the palm-sized, 17-key section of a standard computer keyboard, usually on the far right.It provides calculator-style efficiency for entering numbers.he arrangement of digits on numeric keypads with the 7-8-9 keys two rows above the 1-2-3 keys is derived from calculators and cash registers. It is notably different from the layout of telephone Touch-Tone keypads which have the 1-2-3 keys on top and 7-8-9 keys on the third row.
NumPy is open source Python package for scientific computing. NumPy supports large, multidimensional arrays and matrices. NumPy is written in Python and C. NumPy arrays are faster than Python lists. But NumPy arrays are not flexible like Python lists, you can store only same data type in each column. NumPy is essential for other Python scientific packages like SciPy, scikit-learn and OpenCV.