百度试题 结果1 题目The rows in the periodic table are called ___. A. groups B. periods C. elements D. properties 相关知识点: 试题来源: 解析 B。解析:文章中明确提到“The rows are called periods.”。 反馈 收藏
A. Groups B. Periods C. Elements D. Properties 相关知识点: 试题来源: 解析 B。原因:文章中明确提到“The horizontal rows or periods show how the properties of elements change as you move across.”,即水平行被称为 periods。反馈 收藏
题目The horizontal rows in the periodic table are called___. A. groups B. periods C. families D. series 相关知识点: 试题来源: 解析 B。元素周期表中的水平行称为周期。选项 A 组是垂直列;选项 C 家族不准确;选项 D 系列也不是水平行的正确名称。反馈 收藏...
The rows on the periodic table are called periods. All the elements in a period have valence electrons in the same shell. The number of valence electrons increases from left to right in the period. When the shell is full, a new row is started and the process repeats. Groups on the Per...
Calculates the number of payment periods for an investment based on constant-amount periodic payments and a constant interest rate. PMT Calculates the payment for a loan based on constant payments and a constant interest rate. PV Calculates the present value of an annuity investment based on consta...