Potassium is present on the Earthâs crust in the form of minerals. Main ores having ample amounts of potassium are orthoclase, granite, sylvite, carnallite. Potassium is represented as the symbol K. Its atomic number is 19, and it has an electronic configuration of 4s1.
Constructors (C++) A constructor is a kind of member function that initializes an instance of its class. A constructor has the same name as the class and no return value. A constructor can have any number of parameters and a class may have any number of overloaded constructors.
version added: 1.4 .addClass(function). function. Type: Function (Integer index, String String. A function returning one or more space-separated class names to be added to the existing class name(s). Receives the index position of the element in the set and the existing class name(s) as arguments.Within the function, this refers to the current element in the set.It's important to note that this method does not replace a class. function returning one or more space-separated class names to be added to the existing class name(s). Receives the index position of the element in the set and the existing class name(s) as arguments.