Question

30 marks Q.1 Select the correct answer from the answers in brackets to complete each sentence. 157 1. An element has electronic configuration 2.8.1 and 12 neutrons. Its mass no, is - 111/23/12] 2. The maximum number of electrons in M-shell is 18/32/18] 3. Isotopes have same [no. of neutrons / electronic configuration/atomic masses/ 4. An [atom/ion) is capable of independent existence in solution. 5. An atom with electronic configuration 2,7 & mass number 19 will have neutrons. [8/10/12]​

Answer 1

Answer:

1). mass number -23, 2) 18, (3) electronic configuration (4) complex ion (5). 8