Forms should carry their action attributes and possess a method and id attribute as well. Form elements attributes are URL information recieved in the form when it is submitted. These can be sent using two methods get or post.
You can create a password to hide sensitive data. The size and max-length attributes can be carried much like single line text input. The cols attribute decisde how big the areas of text should be.
Radio buttons name attributes are sent over to the server with the users pre-selected presets. The value attribute tell the value the user selects. The checked attribute should be inducated when the page loads. One one radio button in a group should use the checked attribute.