Which chemical element of Group 18 of the periodic table

In certain code language, ‘APPLICATION’ is coded as ‘ETTPMGEXMSR’. How will ‘DETERGENT’ be coded in that language? 

In a code language, 'MAGNESIUM' is written as '55' and 'NITROGEN' is written as '48'. How will 'COPPER' be written in that language?

Which of the following words is coded as “fgt” in the given language?

What is the symbol used in the word 'clipboard'?

In a certain code COUNTERS is written as ‘OVPDRQDS’. How is CLEARING written in that code?

If 'LAPTOP' is coded as 5 and 'HONEYCOMB' as 8, then what is the code number for the word 'DEHRADUN'?

What is the code for “revive tussle response”?

In a certain code language, 'HOOK' is coded as '19' and 'MAID' is coded as '17'. How will 'PEAR' be coded in that language?

What is the code for the word “You”?

Which of the following is coded as ‘vg ks’?