Three elements A, B and C have 3, 4 and 2 electrons in their outermost shell..... (a) Give the group number and their valencies. (b) Which of these are metals.
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4
B and C are the metal because it contain 3 and 2 electron
Puggi1:
what abt first part
no but tell me group no of C
because i thought it was Berilium
Answered by
2
Valarie's of A,B and C are respectably 3,4 and 2
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